James Stormonth.

A manual of scientific terms, pronouncing, etymological, and explanatory, chiefly comprising terms in botany, natural history, anatomy, medicine, and veterinary science, with an appendix of specific names. Designed for the use of junior medical students, and others studying one or other of these sci online

. (page 29 of 68)
Online LibraryJames StormonthA manual of scientific terms, pronouncing, etymological, and explanatory, chiefly comprising terms in botany, natural history, anatomy, medicine, and veterinary science, with an appendix of specific names. Designed for the use of junior medical students, and others studying one or other of these sci → online text (page 29 of 68)
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flower leaves: hexapetaloid, a.,
h^ks f -d'pet f 'dl'dyd (Gr. eidos, re-
semblance), having six coloured
parts like petals.

hexapod, n., heks'-d-pSd (Gr. hex,
six; pous, a foot, podos, of a
foot), a creature possessing six
legs, as insects: hexapodotis, a.,
heks'dp'dd-us, having six legs.

hibernacula, n., hib'-er-nak'-ul-d
(L. hibernacula, winter quarters),
a name applied to the leaf buds,
as the winter quarters of the
young branches ; the winter
quarters of a wild animal, or of
a plant.

Hibiscese, n. plu., Jiib-is'-se-e (L.
hibiscum, Gr. hibiskos, a species
of wild mallow), a Tribe or Sub-
order of the Ord. Malvaceae :
Hibiscus, n., hib-is'-kus, a genus
of plants producing showy flowers
of a variety of colours in the
species : Hibisca rosa-sinensis,
roz'-d-sln-ens'-is (L. rosa, a rose;
Sinensis, Chinese), a species pos-
sessing astringent properties, used
by the Chinese to blacken their
eyebrows and their shoes : H.
esculentus, esk'-ul-ent'-us (L. esc-
ulentus, good for food from
esca, food), whose fruit, from its
abundant mucilage, a common
ingredient in soups of hotter

climates, under the name Ochro
and Gombo : H. cannabiuus,
kan-ncib'm-us (L. canndbmus, of
or belonging to hemp from L.
cannabis, Gr. kannabis, hemp),
produces the Sunnee-hemp of
India, yields a fibre like jute :
H. mutabilis, mut-db'-il-is (L.
mutdbilis, mutable from muto,
I change), a species which re-
ceives its name from the changing
colour of its flowers, varying from
a pale rose to a pink colour.

hiccough and hiccup, n., hik'-up
(Dut. huckup, F. hoquet, hic-
cough ; Dut. hikken, to sob), a
very troublesome affection, due
to a short, abrupt contraction or
convulsion of the diaphragm.

hickory, n,, hik f '8r>i (not ascer-
tained), a nut-bearing American
tree, whose wood possesses great
strength and tenacity ; the Carya
alba, Ord. Inglandacese.

Hieracium, n., hi^er-af'Si'tim (Gr.
hi&rax, a hawk said to be so
called because eaten by the hawk,
or its juice used by it for sharp-
ening its sight), an extensive
genus of pretty flowering plants,
adapted for rockwork, Ord. Com-

hiera picra, hi'-Zr-a pl-rd (Gr.
hieros, sacred ; pikroa, bitter), a
popular remedy for constipation,
known by the name 'hickory
pickory, ' consisting of a mixture
of equal parts of canella bark
and aloes.

hilum, n., hlV-um (L. hilum, a
speck, a little thing), the eye of
a seed ; the scar or spot in a
seed indicating the point where
the seed was attached to the peri-
carp, as the dark mark at the
one end of a bean ; in zool.,
hilum or hilus, a small fissure or
aperture ; a small depression.
hip, n., hip (Dut. heupe, Norse
hupp, the flank, the hip), the
projection caused by the haunch
bone and its covering flesh ; the
upper fleshy part of the thigh.




Hippoboscidas, n. plu., hip'po
bos'id-e (Gr. hippos, a horse ;
bosko, I feed), a family of dip-
terous insects, belonging to the
Viviparous section of the Ord.
Diptera, generally known by the
name ' forest flies : ' Hippobosca,
n., hip'po'bftsk'-a, a genus of in-
sects which live upon quadrupeds
and birds : Hippobosca equina,
frkwin'-d (L. equmus, belonging
to a horse from equus, a horse),
the horse fly.

hippocamp, n,, hfptpd-Jc&mp) also
hippocampus, n., hlp'pd-kdmp'*
us (Gr. hippos, a horse ; Jcampto,
I bend or curve ; hippokampos,
L. hippocampus, the sea-horse),
the sea-horse, a fabulous monster;
a small fish of singular shape,
with head and neck like a horse,
called the Pipe-fish or Sea-horse;
in anat, , one of the two convolu-
tions of the brain resembling a
ram's horn or the shape of a sea-
horse, named respectively hippo-
campus minor and hippocampus
major, that is, the lesser and
greater hippocampus.
Hippocratese, n. plu., Mtf-pQ-ler&t
e-e (after Hippocrates, an ancient
Greek physician, and one of the
fathers of botany), a Tribe or Sub-
order of the Ord. Celastraceae :
Hippocratea, n., hip'pd-krdt'e-a,
a genus of mostly climbing
shrubs with very minute flowers :
Hippocratea comosa, kom-oz'd
(L. comosus, hairy from coma,
the hair of the head), yields nuts
which are oily and sweet.
Hippomane, n., hip'pom'dn-e (Gr.
hippomdnes, furious with desire,
a plant which is said by the
ancients to have driven horses
mad if eaten by them from
hippos, a horse ; mania, mad-
ness), a genus of plants, Ord.
Euphorbiacese: Hippomane man-
cinella, man'siri'&l'ld (mod. L.
mancinella, It. mancinello, the
manchineel), the manchineel
tree, growing 40 or 50 feet high

in the W. Indian islands, yields
a milky juice very acrid and
poisonous, which applied to the
skin excites violent inflammation
and ulceration.

hippopathology, n., Up'. po- path*
M'-ti-ji (Gr. hippos, a horse ; Eng.
pathology), the doctrine or de-
scription of the diseases of horses ;
the science of veterinary medic-

Hippophae, n., hip-pof'-d-e (Gr.
hippos, a horse ; phdo, I destroy,
in allusion to the supposed poison-
ous qualities of the seed), a genus
of ornamental trees, Ord. Elseag-
naceae : Hippophae rhamnoides,
ram-noyd'-ez (Gr. rhamnos, the
white thorn; eidos, resemblance),
the sea buckthorn, furnished
with sharp spines, fruit eaten,
and has been used as a pre-

hippophagy, n., hip-pdf'-a>ji (Gr.
hippos, a horse ; phago, I eat),
the practice of eating horse flesh :
hippophagi, n. plu., htp-ptif'.&'ji,
those who eat horse flesh.

hippuria, n., hip-pur'-i-d (Gr.
hippos, a horse ; ouron, urine),
an excess of hippuric acid in the
urine : hippuric, a., liip-pur'-ik,
denoting an acid ; a constituent
of the urine, obtained in greatest
abundance from the urine of horses
or cows ; said to be also found in
the blood of herbivora.

Hippuris, n., hip-pur'-is (Gr. hip-
pos, a horse ; oura, a tail), a
genus of curious aquatic plants,
growing best in marshy places,
so called from the stem resem-
bling a mare's tail arising from the
crowded whorls of very narrow,
hair-like leaves ; Ord. Halorage-

hirsute, a., her^-sut (L. hirsutus,
rough, hairy), covered with long,
stiffish hairs, thickly set ;

Hirudinea, n., her<iid^n<e-d (L.
hirudo, a leech, a blood-sucker,
hirudinis, of a leech), in zool. t




the Order of Annelida including
the Leeches.

hispid, a., hisp'-td (L. hisptdus,
bristly, rugged), rough ; covered
with strong hairs or bristles.

histioid, a., his'ti-oyd (Gr. histos,
a web, a tissue ; eidos, resem-
blance), in anat., tissue-like.

histogenesis, n., hfe'-td'j8n'>&s-is,
also histogeny, n., his-ttidf-Zn-i
(Gr. histos, a web, a tissue ;
genndo, I produce), the origin
or formation of organic tissue :
histogenetic, a., hig<tG'fen',$tftic,
promoting the formation of
organic textures ; in bot., applied
to minute molecules supposed to
be concerned in the formation of

histology, n., hte-t8l'-#-jt (Gr.
histos, a web or tissue ; logos,
discourse), the study of the tissues
of the body, especially its min-
uter elements ; the study of
microscopic tissues in animals or
plants : histological, a., his' to-
lodj'ik-dl, relating to the descrip-
tion of minute tissues in animals
or plants.

histolysis, n., his-tdl'-is-is (Gr.
histos, a web or tissue ; lusis, a
solution from lud, I dissolve),
the disintegration of previously
organized structures : histolytic,
a., his'to-lit'ik, derived from the
disintegration of previously
organized structures ; of the
nature of histolysis.

hives, n. plu., hivz (as supposed
to be shaped something like a
beehive; may be a corruption of
heave, to raise), variously applied
to skin diseases among children,
consisting of vesicles scattered
over the body ; a popular name
for chicken-pox.

holly, n., IMll (AS. holegn], an
evergreen shrub having prickly
leaves, and producing red berries ;
the leaves and bark said to
possess tonic and febrifuge prop-
erties, while the berries are emetic
and purgative ; the wood is

esteemed in turnery, etc., and
the bark furnishes bird - lime ;
systematic name, Ilex aquifol-
ium, Ord. Aquifoliacese.

hollyhock, n., hMli-hdk (holly, a
corruption of holy, as supposed to
have been brought from the Holy
Land ; AS. hoc, W. hocys,
mallows), a tall, beautiful garden
flowering plant, employed medic-
inally in Greece, yields fibres
and a blue dye; the Althaea rosea,
Ord. Malvaceae.

Holocephali, n. plu., hWo-sZf.ali
(Gr. holos, whole ; kephale, the
head), in zool. , a Sub-order of tho
Elasmobranchii, comprising the

holometabolic, a., hdl'd-met-a-
bol'-ik (Gr. holos, whole; metdbdle,
change), applied to insects which
undergo a complete metamorph-

holosericeous, a., htil'd-ser-zsh'-'tis
(Gr. holos, whole ; serikos, L.
sericus, silky), covered with
minute silky hairs, best discovered
by touch.

Holostomata, n. plu., hdl'-ti-stdml
dt'd (Gr. holos, whole ; stdma, a
mouth, stomata, mouths), a div-
ision of gasteropodous molluscs
in which the aperture of the
shell is rounded or entire.

Holothuroidea, n. plu., hol'-d-
thur-oj/d'e-d (Gr. holothourion,
a zoophyte resembling a sponge ;
eidos, resemblance), an Order of
Echinodermata, comprising the
Trepan gs.

Homaliacese, n. plu., hdm-dl't-d'-
sZ-e, also Homaliads, n. plu.,
hom-dl'i-ddz (Gr. homalos,
uniform, regular), the Homalia
family, an Order of tropical trees
and shrubs bearing flowers in
spikes or racemes : Homalium,
n., hdm-dl'-i-ttm, a genus, so
called because their stamens are
regularly divided into three
stamened fascicles.

homocarpous, a., htim'-o-kdrp'-us
(Gr. homos, alike ; karpos, fruit),




having all the fruits of a flower-
head alike.

homocercal, a., horned -serial (Gr.
hdmos, alike; kerkos, the tail),
having equally-bilobate tails, as
in the herring, the cod, etc. ; com-
posed of two equal lobes.

homochromous, a., h6mf>o-lcrom'>
Us (Gr. hdmos, alike ; chroma,
colour), having all the flowerets
on the same flower-head of the
same colour.

homodromous, a., hom-tid'-rim-us
(Gr. htimos, alike ; dromos, a
race-course), in bot., running in
the same direction, as spirals, or
leaves on the stem and branches.

homoeopathy, n., hdm'-e-d'p'ath-i
(Gr. homoios, similar, like ;
pathos, suffering), a mode of
treating diseases by the adminis-
tration of medicines capable of
exciting in healthy persons
symptoms closely similar to those
of the disease for which they are
given; a theory of medical practice
opposed to that commonly known
as Allopathy.

homogamous, a., hom-tig'-am-iis
(Gr. homogamos, married to-
gether from homos, alike,
similar ; gamos, marriage), in
bot., applied to composite plants
having the flowers of the capitula
all hermaphrodite.

homogangliate, a., hdm'o-gang'-
gti-at (Gr. homos, like; gangglion,
a knot), in zool. , having a nervous
system in which the ganglia are
symmetrically arranged.

homogeneous, a., horn'o-jen'-e-iis
(Gr. homos, like; genos, kind),
of the same kind or nature ;
having a uniform structure or
substance ; opposed to ' hetero-
geneous. '

homologous, a., hdm-81'og'US (Gr.
homdlogos, using the same words,
of the same opinion from homos,
like, similar; logos, speech, ap-
pearance), having the same ratio
or proportion ; constructed on
the same plan, though differing

in form and function; in anat.,
having a growth like normal
tissues of the body, as opposed to
'heterologous'; in chem., applied
to analogous bodies whose com-
positions differ by a constant
difference : homologue, n.,
hdm''5>l8g, correspondence or
equivalence of certain organs; a
part in one animal which strictly
represents a part in a different
animal, as the arms in man, the
wings in birds, and the pectoral
fins in fishes : homology, n.,
hom-dV'd'ji, affinity dependent on
structure or the essential corre-
spondence of parts ; the identity
of parts which are apparently
distinct; similarity of structure
of different parts, as between the
upper and lower limbs, exhibiting
a community of plan.

homomorphy, n. , hom'-d-mftrf-i
(Gr. homos, like, similar ; morphe,
shape, form), in bot., the con-
dition of the Compositse when
the disc florets assume the form
of ray florets ; the fertilization of
the pistil by the pollen from its
own flowers ; self-fertilization :
homomorphic, a. , hdm'd-m8rf'-ik,
having the pistil fertilized by the
pollen from its own flowers :
homomorphous, a., hom'-d-mor/'-
us, in zool., having a similar ex-
ternal appearance or form.

homoomerous, a., hom'6'dm'er-us
(Gr. homoios, like, similar; meros,
a part), in bot., applied to lichens
where the gonidia and hyphse in
the thallus appear about equally

homopetalous, a., hom'o-pVt'al'tiS
(Gr. homos, like ; petalon, a
leaf), in bot., having all the
petals formed alike ; having all
the florets alike in a composite

homotropal, a., hom-fa'-rop-al (Gr.
homos, like; tropos, a turning),
in bot., having the same general
direction as the body of which
it forms a part ; applied to the




slightly curved embryo when it
has the same general direction as
the seed.

homotype, n., hom'-o-tlp (Gr.
homos, like, similar ; tupos, form,
a type), that part of an animal
which corresponds to another
part ; correspondence of parts
which lie in series, as the hones
of the foot with those of the
hand : homotypy, n., hom-dt'ip'i,
the state or condition of such
correspondence : homotypic, a.,
hom'-o-tip'-ik, pert, to ; homol-

honey-suckle, n., hun'-l-suH-l
(Eng. honey, and suckle), a well-
known climbing plant and
flower ; the common name of the
plants of the genus Lonicera,
Ord. Caprifoliaceae ; honey-suckle
is sometimes applied to meadow
clover, Trifolium pratense; the
French honey-suckle is Hedy-
sarum coronarium.

Honkeneja, n., hdng'kgn-e'ja (an
Iceland word), a genus of plants,
Ord. Caryophyllacese : Honkeneja
peploides, pep-loyd'-ez (Gr.peplos,
a covering, a robe; eidos, re-
semblance), a species which has
been used as a pickle, and in
Iceland as an article of food.

hops, n. plu., hftps (Ger. hopfen,
Dut. happen, hops), a climbing
plant whose seeds or flowers are
employed in imparting bitterness
to beer and ale ; the Humulus
lupulus, Ord. Cannabinacese.

hordeolum, n., hdrd-e'-dl-um (a
dim. of L. hordeum, barley), in-
flammation of one of the meib-
omian glands in the margin of the
eyelid, so called from its likeness
in size and hardness to a small
barley-corn ; the stye.

Hordeum, n., hdrd'Z-Hm (L.
hordeum, barley), a genus of the
cereal grains, the barleys and
barley grasses, Ord. Gramineee :
Hordeum vulgare, vulg-ar'% (L.
vulgaris, general, common),
common barley : H. hexastichum,

h%ks>ast f -ik>um (Gr. hex, six ; stix,
order, rank, stichos, of order or
rank), bere or bigg, a variety of

horehound, n., hor'-hownd (AS.
hara-hune from har, hoary,
grey ; hune, consumption), a
native wild plant, supposed
to act as a tonic and ex-
pectorant, but not now used by
physicians ; the Marrubium
vulgare, Ord. Labiata.

horn-beam, n., horn'-bem (Goth.
haurn, horn; Ger. baum, Dut.
boom, a tree), a tree whose wood
is white, hard, and heavy, hence
its name ; the Carpinus betulus,
Ord. Cupuliferse or Corylacese.

horse-chestnut, n., the ^Esculus
hippocastanum, Ord. Sapindaceae.

horse-radish, n., the Cochlearia
Armoracia, Ord. Cruciferae :
horse-radish tree, the Moringa
pterygosperma, Ord. Moringaceae.

hortus siccus, Jiort'-us sik'-kus
(L. hortus, a garden ; siccus,
dry), in bot. , a collection of dried
plants preserved between paper
or in books ; a herbarium.

hospitalism, n., hds'pit-al-izm (L.
hospitalis, hospitable from
hospes, a guest), the prejudicial
influences of large hospital build-
ings upon sick residents, es-
pecially when the patients are
numerous; the subject of hospital

houseleek, n., hows'-lek (Eng.
house; Icel. laukr, a leek), a
well-known herb, the Sem-
pervivum tectorum, Ord. Crassul-

Hoya, n., hoy'-a (after Thomas
Hoy, a botanist and gardener), a
genus of plants, Ord. Asclepiad-
acese, which bear very handsome
waxy flowers : Hoya carnosa,
kdr-noz'd (L. carnosus, fleshy
from cdro, flesh), the wax-flower,
so named from the peculiar
aspect of its blossoms.

humerus, n., hum f -er-us (L. hiim-
Zrus, the shoulder), the arm from




the shoulder to the elbow; the
bone of that part, consisting of
two parts, the scapula and the
clavicle: humeral, a., hum'er-al,
pert, to the shoulder.

humifuse, a., humf-i-fuz (L. humus,
the ground ; fusus, spread), in
bot., spreading over the surface
of the ground ; procumbent.

HumiriacesB, n. plu., hum'-ir^-d'
s$-e (formed probably from Umiri,
where found), the Humiriads, an
Order of plants of Brazil, which
some place as a Sub-order under
the Ord. Meliacese : Humiria, n. ,
hum-tr'-i-a, a genus : Humiria
floribunda, flo^i-Mud'-a (L.

flos, a flower, floris, of a flower ;
abundans, abounding), a species
whose trunk, when wounded,
yields a liquid yellow balsam,
called balsam of Umiri : H. bal-
samifera, bal'-sam-if-tr-a (L.
balsamum, balsam ; fero, I bear),
yields a balsam used for perfumery
and in medicine.

humor or humour, n., humf-or
(L. humor, fluid of any kind,
moisture ; F. humeur), any
moisture or fluid of the body
except the blood ; certain parts
of the eye which abound in fluid:
humoral, a., hurn'or-al, pert, to
the fluids of the body or proceed-
ing from them ; in med. , applied
to that doctrine which ascribes
all diseases to a degenerate or
disordered state of the fluids of
the body : aqueous humor, the
watery matter which fills the
space in the forepart of the eye-
ball between the cornea and iris.

Humulus, n., hum'ul-us (L.
humus, the earth, the ground), a
genus of creeping plants, Ord.
Cannabinacese, constituting the
well - known Hop, extensively
cultivated in some parts of
England, so named as it creeps
along the ground if not sup-
ported: Humulus lupulus, loop'-
ul'iis (dim. of L. lupus, a wolf),
the common hops, the strobili

of the female plants of which
constitute the hops ; employed
as a tonic and narcotic in the
form of extract, infusion, and

humus, n., hum'-us (L. humu*,
earth, soil), vegetable mould,
the product of decayed veget-

Hura, n., hur'-a (S. Arner. name),
a genus of plants, Ord. Euphorbi-
acese: Hura crepitans, Jcrep'it-anz
(L. crepitans, creaking, crack-
ling), the sand-box tree or
monkey's dinner-bell, the juice
of which is very acrid ; the
numerous parts of its fruit, when
dry, separate from each other
with great force.

husk, n., husk (Dut. hulsche, the
covering of seeds), the external
covering of many fruits and
seeds ; the pericarp.

Hyacinthus, n., hi'-a-smth'us (L.
Hyddnthus, Gr. Huakinthos, a
beautiful youth, beloved by
Apollo, and accidentally killed
by a blow of his quoits, and from
whose blood the flowers sprang ;
the blue iris, corn-flag, or gladiol-
us of the ancients), a beautiful
and well-known genus of bulbous
plants, Ord. Liliacese : Hyacinth-
us orientalis, dr'-i-ent-dl'is (L.
orientdlis, oriental from orient,
arising), the hyacinth, a popular
spring flower having numerous
garden varieties and various
colours of flowers.

hyaline, a., hi'al-in (Gr. hualos,
glass), consisting of or resembling
glass ; in med. , clear and of a
slight consistence like a jelly ; in
bot., transparent or colourless :
n., a substance which originates
the cell-nucleus, or the part where
the cell-nucleus appears : hyaloid,
a., hl'-al-dyd (Gr. eidos, re-
semblance), like glass ; trans-
parent : n. , an extremely thin
and clear membrane.

hybrid, n., hi'-brid (L. hybrida,
a hybrid, a mongrel from Gr.




hubris, a wanton act, an outrage),
an animal or plant the produce
of different kinds or species ; a
plant resulting from the fecunda-
tion of one species by another :
adj., having the origin or char-
acter of a hybrid : hybridisation,
n., hl'brid'$z-d'shun, the act of
rendering hybrid.

hydatids, n. plu., hid'&t-idz. and
hydatides, n. plu., hld-at'-id-ez
(Gr. hudatis, a vesicle, hudatldos,
of a vesicle from hudor, water),
little vesicles or bladders, with
fluid or semi - fluid contents,
found in the bodies of animals in
a state of disease, and containing
the larval forms of parasites :
hydatid mole, the product of a
morbid pregnancy consisting of
bunches of mucoid vesicles,
having a general resemblance to
clusters of grapes.

Hydnocarpus, n., hld'nd-kdrp'us
(Gr. hudnon, a tuber ; karpos,
fruit), a genus of small trees,
Ord. Bixace?e : Hydnocarpus
venenatus, ven'-Zn-at'us (L. ven-
enatus, poisonous fromvenenum,
poison), a species which produces
a fruit of the size of an apple,
which the Cingalese use to
poison fish ; the seeds contain
an oil used medicinally.

Hydnora, n., hld-nor'-a (see
Hydnum), a genus of root
parasites having a fungus-like
aspect, Ord. Cytinacese: Hydnora
Africana, af'rik'dn'a(Africdnus,
of or from Africa), a parasitic
flowering plant of very singular
construction, which attacks the
roots of the Cistus, some succulent
Euphorbiaceae, and other plants.

Hydnum, n., hid'-num (Gr. hud-
non, a mushroom), a genus of
mushrooms, Ord. Fungi : Hyd-
num coralloides, kdr'dl-oyd'ez
(L. corallum, Gr. korallion, red
coral), a species of mushroom
which are eatable, found under
the trunks of trees in moist situa-

hydra, n., Jdd'rft (Gr. hudra, L.
hydra, the hydra, a water snake;
Gr. hudor, water), a water snake;
a fabulous monster serpent hav-
ing many heads, slain by Her-
cules ; a fresh - water polype :
hydraform, a., hid'ra'form (L.
forma, shape), resembling the
common fresh -water polype or
hydra in form.

hydragogue, n., hid^ra-gftg (Gr.
hudor, wa,ter ; ago, I lead), a
medicine which produces copious
watery stools.

Hydrangese, n. plu., hld-ranj'Z-e
(Gr. hudor, water; anggeion, a ves-
sel, a capsule), a Sub-order of the
Ord. Saxifragacese : Hydrangea,
n., a genus of plants, pretty
when in flower, so called from
the capsules of some of the
species appearing like a cap :
Hydrangea Thunbergii, tun-
berj'i'i (after Thunberg, a celeb-
rated traveller and botanist), a
species whose leaves furnish a tea
of a very recherche character,
bearing the name Ama-tsja in

hydranth, n., hld'ranth (Gr.
hudra, a water serpent ; anthos,
a flower), the polypite or proper
nutritive zooid of the Hydro-

hydrargyrum, n., hid-rdrj'Jr-'&m
(Gr. hudrarguros, fluid silver
from hudor, water ; arguros,
silver), quicksilver or mercury :
hydrargyria, n. plu., hld'-rdr-
jir'i-a, one of the ill effects of
mercury applied locally : hydrar-
gyriasis, n., hid-rdr'-jir-i'-as-is, a
disease produced by the abuse of

Hydrastis, n., hld-ras'tis (Gr.
hudor, water), a genus of plants
growing in moist situations, Ord.
Kanunculaceae : Hydrastis Can-
adensis, kdn'-dd-Zntfta (of or
from Canada), a species whose
yellow roots are used as a tonic ;
yellow root.

hydrate, n., hid'-rat (Gr. hudor,




water), a compound containing a
definite proportion of water chem-
ically combined : hydrated, a.,
htd'rdt'8d, combined with water
in definite proportions : hydra-
tion, n., htd-rd-sh'&n, the act or
state of becoming chemically
combined with water.

hydraulic, a., hid-rdtffKtk (Gr.
hudor, water ; aulos, a pipe),
relating to the conveyance of
water through pipes ; worked by
water : hydraulics, n. plu. , hid-
roJwl'-iks, the science which treats
of the application of the forces
influencing the motions of fluids;
the art of raising, conducting,
and employing water for practical

hydrencephalocele, n., hid'-r$n-
s%f'al''d'Sel (Gr. hudor ', water ;
engkephalon, the brain ; kele, a
tumour), a tumour occasioned by
hernial protrusion of the mem-
brane of the brain and the fluid
contents of the cranium, through
a deficiency in the latter.

hydro, hid r -rd, and hydr, hid'-r
(Gr. hudor, water), prefixes
in scientific terms denoting the
presence, action, or quality of
water ; denoting the presence of
hydrogen : hydro-carbon, kdrtf
8n (Eng. carbon), a compound of
hydrogen and carbon ; a term
usually applied to bitumens,
mineral resins, and mineral fats
which are composed of hydrogen
and carbon in varying propor-
tions: hydro-carburet, n., hid'-ro-
kdrb'ur'et, a compound of hydro-
gen and carbon ; hydro-carbon.

hydrocaulus, n., hid'-rd'kdwl'-us
(Gr. hudra, a water serpent ;
kaulos, a stem), in zool., the
main stem of the coenosarc of a

hydrocele, n., lild'-ro-sel (Gr.
hudor, water ; kele, a tumour),

Online LibraryJames StormonthA manual of scientific terms, pronouncing, etymological, and explanatory, chiefly comprising terms in botany, natural history, anatomy, medicine, and veterinary science, with an appendix of specific names. Designed for the use of junior medical students, and others studying one or other of these sci → online text (page 29 of 68)