hydromicaceous 
Hydromicaceous and argillaceous schists. 
A mer. Jour. Set., 3d ser., XXX. 282. 
hydromotor (hi-dro-mo'tpr), n. [< Gr. viup 
(vip-), water, + NL. motor, motor.] A form of 
motor, designed for the propulsion of vessels, 
in which the propelling power is that of jets of 
water ejected from the sides or stern. 
The little vessel supplied with the hydromotor met with 
a fair degree of success. Sei. Amer., N. 8., LV. 47. 
hydromphaluin (hl-drom'fa-lum), i. [NL., < 
Gr. Mpo/u^aAo? , having water in the umbilical re- 
gions, < viup (Mp-), water, + ou0a/Wc, boss, knob, 
navel.] Inpathol., an accumulation of serous 
liquid in the sac of an umbilical hernia, or 
simply the extension of the umbilicus by as- 
cites.' Also hydromphalon. 
hydromyd (hi'dro-mid), n. An animal of the 
genus Hydromys. E. Blyth. 
hydromyelia (hi'dro-mi-e'li-a), n. [NL., < Gr. 
Map (i'ip-), water, 4- /ivtUf, "marrow.] Inpa- 
thol., the distention of the central canal or ven- 
tricular cavity of the spinal cord with a se- 
rous liquid. See hydrorachis. Also hydromye- 
lus. 
Hydromyinae (hi"dro-mi-i'ne), . pi. [NL., < 
JSydromys + -ince.] A subfamily of rodents of 
the family Muriate, of which the type is the ge- 
nus Hydromys, and in which the teeth are only 
12 in number. 
Hydromys (hi'dro-mis), . [NL., < Gr. viup 
(vip-), water, + //'if = E. mouse.} A genus of 
rodents constituting the subfamily Hydromyi- 
rue, confined to the Australian region, where the 
species are known as water-rats and beaver- 
rats. H. chrysogaster is an example. Geoffrey, 
1805. See cut under beaver-rat. 
hydromysta, hydromystes (hi-dro-mis'ta, 
-tez), n. [< LGr. *UptfbmK, < Gr. viup (vip-), 
water, + //iirrw, one who initiates: see mysta- 
gogue.] In the early church, a presbyter or 
cleric who sprinkled with holy water the people 
entering or leaving a church. 
hydronaphthol (hi-dro-naf 'thol), . [< Gr. 
viup (vip-), water, + E. naphthal."] An antisep- 
tic preparation, probably one of the naphthols, 
prepared from naphthalene. [Trade-name.] 
Hydronemateas (hi"dro-ne-ma'to-e), n. pi. 
[NL. (Nees von Esenbeck', 1823),' < Gr. viup 
(vip-), water, + vij/ia(T-), a thread, + -e<E.] In 
bot., same as Alga. 
hydronephelite (hi-dro-nef 'e-lit), n. [< Gr. MM 
(vip-), water, + nephelite, q. v.] A hydrous sili- 
cate of aluminium and sodium, related to thom- 
sonite in composition, and derived from the al- 
teration of elaeolite (nephelite). 
hydronephrosis (hi"dro-nef-ro'sis), n. [NL., < 
Gr. v6up (vip-), water, -f- vtypAf, kidney, + -osis.~\ 
Inpathol., a condition produced by obstruction 
of the outflow of the urine through the ureter, 
so that the ureter and the renal pelvis become 
greatly distended. 
hydronephrotic (hi"dro-nef-rot'ik), a. Per- 
taining to or affected with hydronephrosis. 
hydronette (hi'dro-net), n. [< F. hydronette, 
< Gr. viup (vip-), water, + -n-, a mere inser- 
tion, + -ette.~] 1. A syringe. 2. A portable 
force-pump for use in gardens and conserva- 
tories. 
Hydroparastatae (hi'dro-pa-ras'ta-te), n. pi. 
[< MGr. *vipoirapaardTat, (. Gr. viup (vip-), water, 
+ TrapaordTrK, one who stands by, an assistant : 
seeparastatic.] A sect which separated from 
the early church in the latter part of the sec- 
ond century: so named from their use of water 
only, instead of wine and water, in the eucha- 
rist. Also called Aquarians and Encratites. 
hydropath (hi'dro-path), n. [< hydropathy .] 
Same as hydropathist. 
hydropathic, hydropathical (hi-dro-path'ik, 
-i-kal), a. [< hydropathy + -ic-al."] Relating 
to Hydropathy. 
hydropathist (hi-drop'a-thist), n. [< hydrop- 
athy -r -ist.] 1. One who is versed in or prac- 
tises hydropathy. 2. One who believes in the 
efficacy of hydropathic treatment. 
He has tried both hydropathy and homoeopathy ; . . . 
has now settled into a confirmed hydropathist. 
0. A. Sola, Dutch Pictures. 
hydropathy (hi-drop'a-thi), n. [= F. hydropa- 
thie; a name formed after the supposed analo- 
gy of homeopathy, allopathy, etc., and intended 
to signify 'water-cure' or 'water-treatment'; 
< Gr. iiiup (vi/>-), water, + Ttdfkx;, suffering, dis- 
ease.] The method of treating diseases by the 
external and internal use of water ; hydrother- 
apeutics, especially in the cruder forms. See 
voter-cure. 
2938 
hydropericardium (hi-dro-per-i-kar'di-um), n. 
[NL., < Gr. iiiup (vip-), water, + nepiKapiiov, 
pericardium.] Inpathol., the accumulation of 
serous liquid in the pericardial cavity. Also 
culled lii/rh-dftirdia. 
hydroperitoneum (hi-dro-per'i-to-ne'um), n. 
[< Gr. viup (rip-), water, + irepiTovatov, perito- 
neum.] Inpathol., the effusion of lymph into 
the peritoneal cavity; ascites. 
hydrophane (hi'dro-fan), n. [< Gr. viup (Mp-), 
water, + ^awf, clear, < (faivctv, show, shine.] 
A partly translucent whitish or light-colored 
variety of opal, which absorbs water upon im- 
mersion and then becomes transparent. Also 
called oculiis mundi. 
hydrophanous (hi-drof'a-nus), a. [As hydro- 
phane + -OUS.] Made transparent by immer- 
sion in water. See hydrophane. 
Hydrophasianus (hi-dro-fa-si-a'nus), i. [NL., 
< Gr. i-iup (i'ip-), water, + <j>amav6f, a pheas- 
ant.] A genus of jacanas, of the family Par- 
Hydrophyllaceae 
becoming yel- 
lowish below, 
with numer- 
ous transverse 
black blotches. 
hydrophite 
(ni'dro-fit), 
n. (< Gr. 
viup (vip-), 
water, + 
<>;. snake, 
+ -iff.] A 
massive min- 
eral of a 
green color. 
amea to aeweyiite ana to serpentine. 
hydrophobe (hi'dro-fob), n. [=F. hydroj 
Sp. liidrdfobo = Pg. hydrophobo = It. i 
< L. hydrophobus, < Gr. i<!po^<S,3of, having 
Asiatic Water-pheasant (Hjjraflialiania ckirurpa). 
ridce or Jacanidte, established by Wagler in 1832, 
containing the Asiatic water-pheasant orpheas- 
ant-tailed jacana, H. chiruraun. See Jacana. 
hydrophid (hl'dro-fid), n. A venomous sea- 
snake of the family Hydrophidce. 
Hydrophidas (hi-drof 'i-de), . pi. [NL., < Hy- 
drophis + -1*0.] A family of ophidians of 
the suborder Proteroglypha, with permanently 
erect poison-fangs, and the tail compressed 
and fin-like, and thus fitted for swimming; 
the sea-snakes, or marine venomous serpents. 
These snakes inhabit the Indian ocean and tropical parts 
of the Pacific, and are extremely poisonous. There are 
several genera, as Hydropkii, Platurus, and Pelamis. 
hydrophile (hi'dro-fil), . [< NL. Hydrophiliis.~\ 
A water-beetle o'f the genus Hydrophilus, or 
one of the Hydrophilidfe. 
hydrophilid (hi-drof'i-lid), n. One of the Hy- 
drophilida!. 
Hydrophilidse (hi-dro-fil'i-de), n. pi. [NL., 
< Hydrophilus + -ida?.] A family of clavi- 
corn beetles, 
with numerous 
genera and spe- 
cies. The dorsab- 
dominal segments 
are partly membra- 
nous ; the ventral 
segments are free ; 
at least one pair of 
tarsi are 5-jointed ; 
the palpi are dis- 
tant at base; and 
the angles of the 
large quadrate 
mentum are not 
prolonged. The 
same or a corre- 
sponding group of 
water-loving Dee- 
ties is called //.- 
drophiiida, Hy- 
drophili. Hydro- 
pfn'lii, HydrophHini, Hydrophilites, or Hydrophiluridea. 
See ateo cut under Hydrobius. 
hydrophilite (hi-drof 'i-lit), . [< Gr. viup (vdp-), 
water, + ^OoC, loving, + -ite?.] Native calcium 
chlorid. Also called chlorocalcite. 
hydrophilous (hi-drof 'i-lus), a. [< Gr. i'6up(v6p-), 
water, + 0('/of, loving.] In bot., pollinated by 
the agency of water. Compare anemophilous, 
entomophilous. 
Hydrophilus (hi-drof 'i-lus), n. [NL., < Gr. 
Map (vip-), water, + 0i'Aof, loving.] The typi- 
cal genus of Hydrophilidce. It contains the largest 
beetles of the family, such as the giant water-beetle, 
H. triangularis, a common North American species, of 
a shining black color, li inches long. The correspond- 
ing European species is H. piceus. Also called Hydro- 
soina. 
Hydrophis (hl'dro-fis), . [NL. , < Gr. Map (vSp-), 
water, + 6</><f, a snake.] The typical genus 
of Hydrophidte or sea-snakes. One of the com- 
monest sea-snakes is the chital, H. cyaneicincta, which 
attains a length of 5 or 6 feet, and is of a greenish colur 
*&rf/*ii o">w/. 
It is a hydrous silicate of iron and magnesium, 
allied to deweylite and to serpentine. 
[= F. hydrophobe = 
. idrofobo, 
---- ------- , . ------ r . T ---------- ingahor- 
ror of water: see hydrophobia^] One who is 
suffering from hydrophobia. 
hydrophobia (hi-dro-fo'bi-a), H. [Also liydro- 
phoby, formerly hydrophobie, < F. hydrophobie = 
Sp. hidrofobia = Pg. hydrophobia = It. idro- 
fobia; < LL. hydrojihobia, < Gr. ii5po^o/3j, a 
horror of water caused by the bite of a mad 
dog, < M/)o0<}/3of, having a horror of water, < 
iiiup (vip-), water, + $efiea6ai, fear, ^<i/5of, fear.] 
In pathol. : (a) A symptom of rabies in man, 
consisting in a furious aversion to liquids and an 
inability to swallow them. See rabies. Hence 
(6) Babies, especially in human beings. 
Athenodorus . . . writeth that not only the . . . lepro- 
sle, but also the hydrophobie that is to say, the fear of 
water occasioned by the biting of a mad dog were first 
discovered In the days of Asclepiades. 
Holland, tr. of Plutarch, p. 838. 
(c) Any morbid or unnatural dread of water, 
such as may exist independently of rabies. 
hydrophobie (hi-dro-fo bik), a. [< LL. hydro- 
phobicus, < Gr. Mpo0o/3<Kof, < vipo<t>of3ia. hydro- 
phobia: see hydrophobia.} Of, pertaining to, 
or affected with hydrophobia or rabies; rabid. 
There are people who deny the existence of hydravhobu 
Infection. The American, VL 277. 
hydrophobophobia (hi-dro-fo-bo-fo'bi-a), n. 
[NL., < Gr. tx5po0o/3z, hydrophobia, + 
; B, ptipa ; C. imago. (About natu- 
ral size.) 
fear, as in hydrophobia, q. v.] In pathol., a 
morbid condition produced by excessive dread 
of rabies, which may simulate its real or sup- 
posed symptoms. 
hydrophoby (hi'dro-fo-bi), n. [See hydropho- 
bia.'] Hydrophobia. [Bare.] 
They set up the long howl of hydrophoby at my princi- 
ples. Coleridge, To Sir George Beaumont. 
Hydrophora (hi-drof 'o-rS), n. pi. [NL., < 
Gr. iipcxpopof, carrying water: see hydrophore.] 
One of the three divisions into which Huxley 
and other authors divide the Hydrozoa, the 
other two being the Discophora and the Sipho- 
nophora. The members are, in all cases except that of 
Hydra, fixed ramified hydrosomes, on which many hy- 
dranths and gonophores are developed. The tentacles 
are either scattered over the hydranths or arranged in one 
circle round the mouth, or in two circles, one close to the 
mouth and one near the aboral end. Very generally for 
example, in all Sertulariidft and Tubulariida there is a 
hard chitinous cuticular skeleton or crenosarc, which usu- 
ally gives rise to hydrothecce, into which the hydranths 
can be retracted. The gonophores present every variety, 
from sacs to free-swimming medusoids. The inner mar- 
gin of the bell in these medusoids is always produced into 
a velum, and otolithic sacs and eye-spots are very gen- 
erally disposed at regular intervals round the circumfer- 
ence of the bell. The great majority of what are some- 
times termed the naked-eyed medusae, Oymnophthalmata, 
are simply the free-swimming gonophores of Hydrophora. 
hydrophoran (hl-drof'o-ran), a. and . I. a. 
Having the characters of the Hydrophora; per- 
taining to the Hydrophora. 
H. n. One of the Hydrophora. 
hydrophore (hi'dro-for), . [< Gr. 
carrying water, < viup (vip-), water, + 
< (tifpeiv = E. bear 1 .'] An instrument for obtain- 
ing specimens of water from any desired depth 
below the surface. 
hydrophorOUS (hi-drof 'o-rus), a. Pertaining to 
the Hydrophora. 
hydrophthalmia (hi-drof-thal'mi-a), n. [NL., 
< Gr. viup (i'ip-), water, -f- o^fla/i/Aof, eye.] In 
pathol., an increase in the quantity of either the 
aqueous or the vitreous humor. Dttnglison. 
Hydrophthalmia anterior. Same as buphthalmoi. 
hydrophthaliny (hi'drof-thal-mi), n. Same as 
hyitrophthalmia. [Bare.] 
Hydrophyceae (hi-dro-fi'se-e), n.pl. [NL. 
(Fries, 1825), < Gr. viup (Up-), water, + ^fwof, a 
seaweed (see/ci<#), + -eie.] In bot., same as 
A Igif. 
Hydrophyllaceae (hi*dro-fi-la'se-e), . pi. 
[XL. (Lindley, 1836), < Hydrophylltim + -<tcete.~\ 
