Hypotyposis Hy`po·ty·po"sis noun [ New Latin , from Greek ..., from ... to sketch out; ... under + ... to impress.] (Rhet.) A vivid, picturesque description of scenes or events.

Hypoxanthin Hy`po·xan"thin noun [ Prefix hypo- + xanthin .] (Physiol. Chem.) A crystalline, nitrogenous substance, closely related to xanthin and uric acid, widely distributed through the animal body, but especially in muscle tissue; -- called also sarcin , sarkin .

Hypozoic Hy`po·zo"ic adjective [ Prefix hypo- + Greek ... an animal.] (Geol.) Anterior in age to the lowest rocks which contain organic remains. Lyell.

Hyppish Hyp"pish adjective [ From Hyp .] Affected with hypochondria; hypped. [ Written also hyppish .]

Hyppogriff Hyp"po·griff noun See Hyppogriff .

Hypsiloid Hyp"si·loid adjective [ From Υ, the Greek letter called "upsilon" + -oid .] (Anat.) Resembling the Greek letter Υ in form; hyoid.

Hypsometer Hyp·som"e·ter noun [ Greek ... height + -meter .] (Physics) An instrument for measuring heights by observation of barometric pressure; esp., one for determining heights by ascertaining the boiling point of water. It consists of a vessel for water, with a lamp for heating it, and an inclosed thermometer for showing the temperature of ebullition.

Hypsometric, Hypsometrical Hyp`so·met"ric, Hyp`so·met"ric·al adjective Of or pertaining to hypsometry.

Hypsometry Hyp·som"e·try noun That branch of the science of geodesy which has to do with the measurement of heights, either absolutely with reference to the sea level, or relatively.

Hypural Hy·pu"ral adjective [ Prefix hypo- + Greek ... tail.] (Anat.) Under the tail; -- applied to the bones which support the caudal fin rays in most fishes.

Hypæthral, Hypethral Hy·pæ"thral, Hy·pe"thral adjective [ Latin hypaethrus in the open air, uncovered, Greek ...; ... under + ... ether, the clear sky.] (Architecture) Exposed to the air; wanting a roof; -- applied to a building or part of a building. Gwilt.

Hyracoid Hy"ra·coid adjective (Zoology) Of or pertaining to the Hyracoidea. -- noun One of the Hyracoidea.

Hyracoidea Hyr`a·coi"de·a noun plural [ New Latin See Hyrax , and oid .] (Zoology) An order of small hoofed mammals, comprising the single living genus Hyrax .

Hyrax Hy"rax noun [ New Latin , from Greek ... shrew mouse.] (Zoology) Any animal of the genus Hyrax , of which about four species are known. They constitute the order Hyracoidea. The best known species are the daman ( H. Syriacus ) of Palestine, and the klipdas ( H. capensis ) of South Africa. Other species are H. arboreus and H. Sylvestris , the former from Southern, and the latter from Western, Africa. See Daman .

Hyrcanian, Hyrcan Hyr·ca"ni·an, Hyr"can adjective Of or pertaining to Hyrcania, an ancient country or province of Asia, southeast of the Caspian (which was also called the Hyrcanian) Sea. "The Hyrcan tiger." " Hyrcanian deserts." Shak.

Hyrse Hyrse noun [ German hirse , Old High German hirsi .] (Botany) Millet.

Hyrst Hyrst noun A wood. See Hurst .

Hyson Hy"son noun [ Chin. hi-tshun , lit., first crop, or blooming spring.] A fragrant kind of green tea.

Hyson skin , the light and inferior leaves separated from the hyson by a winnowing machine. M‘Culloch.

Hyssop Hys"sop noun [ Middle English hysope , ysope , Old French ysope , French hysope , hyssope , Latin hysopum , hyssopum , hyssopus , Greek ..., ..., an aromatic plant, from Hebrew ēsov .] A plant ( Hyssopus officinalis ). The leaves have an aromatic smell, and a warm, pungent taste.

» The hyssop of Scripture is supposed to be a species of caper ( Capparis spinosa ), but probably the name was used for several different plants.

Hysteranthous Hys`ter·an"thous adjective [ Greek ... after + ... flower.] (Botany) Having the leaves expand after the flowers have opened. Henslow.

Hysteresis Hys`te·re"sis noun [ New Latin , from Greek ... to be behind, to lag.] (Physics) A lagging or retardation of the effect, when the forces acting upon a body are changed, as if from velocity or internal friction; a temporary resistance to change from a condition previously induced, observed in magnetism, thermoelectricity, etc., on reversal of polarity.

Hysteretic Hys`ter·et"ic adjective (Electricity) Of or pert. to hysteresis. -- Hysteretic constant , the hysteretic loss in ergs per cubic centimeter per cycle.

Hysteria Hys·te"ri·a noun [ New Latin : confer French hystérie . See Hysteric .] (Medicine) A nervous affection, occurring almost exclusively in women, in which the emotional and reflex excitability is exaggerated, and the will power correspondingly diminished, so that the patient loses control over the emotions, becomes the victim of imaginary sensations, and often falls into paroxism or fits.

» The chief symptoms are convulsive, tossing movements of the limbs and head, uncontrollable crying and laughing, and a choking sensation as if a ball were lodged in the throat. The affection presents the most varied symptoms, often simulating those of the gravest diseases, but generally curable by mental treatment alone.

Hysteric, Hysterical Hys·ter"ic, Hys·ter"ic·al adjective [ Latin hystericus , Greek ..., from "yste`ra the womb; perhaps akin to ... latter, later, and English utter , out .] Of or pertaining to hysteria; affected, or troubled, with hysterics; convulsive, fitful.

With no hysteric weakness or feverish excitement, they preserved their peace and patience.

Bancroft.

Hysterics Hys·ter"ics noun plural (Medicine) Hysteria.

Hysteroepilepsy Hys`ter·o·ep"i·lep`sy noun [ Hysteria + epilepsy .] (Medicine) A disease resembling hysteria in its nature, and characterized by the occurrence of epileptiform convulsions, which can often be controlled or excited by pressure on the ovaries, and upon other definite points in the body. -- Hys`ter*o*ep`i*lep"tic adjective

Hysterogenic Hys`ter·o·gen"ic adjective [ Hyste ria + root of Greek ... to be born.] (Physiol.) Producing hysteria; as, the hysterogenic pressure points on the surface of the body, pressure upon which is said both to produce and arrest an attack of hysteria. De Watteville.

Hysterology Hys`ter·ol"o·gy noun [ Greek ...; ... the latter + ... discourse: confer French hystérologie .] (Rhet.) A figure by which the ordinary course of thought is inverted in expression, and the last put first; -- called also hysteron proteron .

Hysteron proteron Hys"te·ron prot"e·ron [ New Latin , from Greek ... the latter, following + ... before, others, sooner.] (Rhet.) (a) A figure in which the natural order of sense is reversed; hysterology; as, valet atque vivit , "he is well and lives." (b) An inversion of logical order, in which the conclusion is put before the premises, or the thing proved before the evidence.

Hysterophyte Hys·ter"o·phyte noun [ Greek ... following + ... plant.] (Botany) A plant, like the fungus, which lives on dead or living organic matter. -- Hys`ter*oph"y*tal adjective

Hysterotomy Hys`ter·ot"o·my noun [ Greek "yste`ra womb + ... to cut: confer French hystérotomie .] (Medicine) The Cæsarean section. See under Cæsarean .

Hystricine Hys"tri·cine adjective [ See Hystrix .] (Zoology) Like or pertaining to the porcupines.

Hystricomorphous Hys`tri·co·mor"phous adjective [ Hystrix + Greek ... form.] (Zoology) Like, or allied to, the porcupines; -- said of a group ( Hystricomorpha ) of rodents.

Hystrix Hys"trix noun [ Greek ... porcupine.] (Zoology) A genus of rodents, including the porcupine.

Hythe Hythe noun A small haven. See Hithe . [ Obsolete]

I (ī). 1. I, the ninth letter of the English alphabet, takes its form from the Phœnician, through the Latin and the Greek. The Phœnician letter was probably of Egyptian origin. Its original value was nearly the same as that of the Italian I, or long e as in mete . Etymologically I is most closely related to e , y , j , g ; as in d i nt, d e nt, b e verage, Latin b i bere; E. k i n, Anglo-Saxon c y nn; E. th i n, Anglo-Saxon þ y nne; E. domin i on, don j on, dun g eon. In English I has two principal vowel sounds: the long sound, as in pīne , īce ; and the short sound, as in pĭn . It has also three other sounds: ( a ) That of e in term , as in thirst . ( b ) That of e in mete (in words of foreign origin), as in machine , pique , regime . ( c ) That of consonant y (in many words in which it precedes another vowel), as in bunion , million , filial , Christian , etc. It enters into several digraphs, as in fail , field , seize , feign . friend ; and with o often forms a proper diphtong, as in oil , join , coin .

See Guide to Pronunciation , §§ 98-106.

The dot which we place over the small or lower case i dates only from the 14th century. The sounds of I and J were originally represented by the same character, and even after the introduction of the form J into English dictionaries, words containing these letters were, till a comparatively recent time, classed together.

2. In our old authors, I was often used for ay (or aye ), yes, which is pronounced nearly like it.

3. As a numeral, I stands for 1, II for 2, etc.

Hyæna Hy·æ"na noun (Zoology) Same as Hyena .

Hæcceity Hæc·ce"i·ty (hĕk*sē"ĭ*tȳ), [ Latin hæcce this.] (Logic) Literally, this-ness . A scholastic term to express individuality or singleness; as, this book.

Hæma- Hæm"a- (hĕm"ȧ- or hē"mȧ-), Hæm"a*to- (hĕm"ȧ*to- or hē"mȧ*to-), Hæm"o- (hĕm"o- or hē"mo-). [ Greek a"i^ma , a"i`matos , blood.] Combining forms indicating relation or resemblance to blood , association with blood ; as, hæma pod, hæmato genesis, hæmo scope.

» Words from Greek a"i^ma are written hema- , hemato- , hemo- , as well as hæma- , hæmato- , hæmo- .

Hæmachrome Hæm"a·chrome (hĕm"ȧ*krōm or hē"mȧ-) noun [ Hæma- + Greek chrw^ma color.] (Physiol. Chem.) Hematin.

Hæmacyanin Hæm`a·cy"a·nin (-sī"ȧ*nĭn) noun [ Hæma- + Greek ky`anos a dark blue substance.] (Physiol. Chem.) A substance found in the blood of the octopus, which gives to it its blue color.

» When deprived of oxygen it is colorless, but becomes quickly blue in contact with oxygen, and is then generally called oxyhæmacyanin . A similar blue coloring matter has been detected in small quantity in the blood of other animals and in the bile.

Hæmacytometer Hæm`a·cy·tom"e·ter (- si*tŏm"e*tẽr) noun [ Hæma + Greek ky`tos a hollow vessel + - meter .] (Physiol.) An apparatus for determining the number of corpuscles in a given quantity of blood.

Hæmad Hæ"mad (hē"măd) adverb [ Hæma- + Latin ad toward.] (Anat.) Toward the hæmal side; on the hæmal side of; -- opposed to neurad .

Hæmadrometer Hæm`a·drom"e·ter (hĕm`ȧ*drŏm"e*tẽr or hē`mȧ- ), Hæm`a*dro*mom"e*ter (- dro*mŏm"e*tẽr) noun Same as Hemadrometer .

Hæmadrometry Hæm`a·drom"e·try (- drŏm"e*trȳ), Hæm`a*dro*mom"e*try (- dro*mŏm"e*trȳ) noun Same as Hemadrometry .

Hæmadromograph Hæm`a·drom"o·graph (-drŏm"o*grȧf) noun [ Hæma- + Greek dro`mos course + -graph .] (Physiol.) An instrument for registering the velocity of the blood.

Hæmadynameter Hæ`ma·dy·nam"e·ter (hē`mȧ*di*năm"e*tẽr or hĕm`ȧ*dĭ-) Hæ`ma*dy`na*mom"e*ter (hē`mȧ*dī`nȧ*mŏm"e*tẽr or hĕm`ȧ*dĭn`ȧ-), Same as Hemadynamometer .

Hæmadynamics Hæma·dy·nam"ics (hē`mȧ*di*năm"ĭks or hĕm`ȧ*dĭ-) noun Same as Hemadynamics .

Hæmal Hæ"mal (hē"m a l) adjective [ Greek a"i^ma blood.] Pertaining to the blood or blood vessels; also, ventral. See Hemal .

Hæmaphæin Hæm`a·phæ"in (hĕm`ȧ*fē"ĭn or hē`mȧ-) noun [ Hæma- + Greek faio`s dusky.] (Physiol.) A brownish substance sometimes found in the blood, in cases of jaundice.

Hæmapod Hæm"a·pod (hĕm"ȧ*pŏd or hē"mȧ*pŏd) noun [ Hæma + -pod .] (Zoology) An hæmapodous animal. G. Rolleston.

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