hippopotamus (n.) Look up hippopotamus at Dictionary.com
1560s, from Late Latin hippopotamus, from Greek hippopotamus "riverhorse" (earlier ho hippos ho potamios "the horse of the river"), from hippos "horse" (see equine) + potamos "river, rushing water" (see potamo-). Replaced Middle English ypotame (c. 1300), which is from the same source but via Old French. Glossed in Old English as sæhengest.
Ypotamos comen flyngynge. ... Grete bestes and griselich ["Kyng Alisaunder," c. 1300]
hippy (adj.) Look up hippy at Dictionary.com
"having prominent hips," 1919, from hip (n.1) + -y (2).
hipster (n.) Look up hipster at Dictionary.com
1941, "one who is hip;" from hip (adj.) + -ster. Meaning "low-rise" in reference to pants or skirt is from 1962; so called because they ride on the hips rather than the waist (see hiphuggers). Related: Hipsters.
hir (pron.) Look up hir at Dictionary.com
Middle English obsolete form of her.
hiragana (n.) Look up hiragana at Dictionary.com
from Japanese hiragana, from hira "plain" + kana "borrowed letter(s)."
Hiram Look up Hiram at Dictionary.com
masc. proper name, from Phoenician/Hebrew Hiram, perhaps short for Ahiram, literally "brother of the lofty."
hircine (adj.) Look up hircine at Dictionary.com
"goat-like," 1650s, from Latin hircinus "pertaining to a goat," from hircus "he-goat, buck," probably related to hirsutus "shaggy" (see hirsute).
hire (v.) Look up hire at Dictionary.com
Old English hyrian "pay for service, employ for wages, engage," from Proto-Germanic *hurjan (cognates: Danish hyre, Old Frisian hera, Dutch huren, German heuern "to hire, rent"). Reflexively, "to agree to work for wages" from mid-13c. Related: Hired; hiring.
hire (n.) Look up hire at Dictionary.com
"payment for work, use, or services; wages," from Old English hyr "wages; interest, usury," from Proto-Germanic *hurja- (see hire (v.)).
hiree (n.) Look up hiree at Dictionary.com
1811, from hire (v.) + -ee.
hireling (n.) Look up hireling at Dictionary.com
"one who works for hire," Old English hyrling; see hire + -ling. As an adjective by 1580s.
Hiroshima Look up Hiroshima at Dictionary.com
city in Japan, literally "broad island," from Japanese hiro "broad" + shima "island." So called in reference to its situation on the delta of the Ota River.
hirsute (adj.) Look up hirsute at Dictionary.com
"hairy," 1620s, from Latin hirsutus "rough, shaggy, bristly," figuratively "rude, unpolished," related to hirtus "shaggy," and possibly to horrere "to bristle with fear," from PIE *ghers-tu-, from root *ghers- "to bristle" (see horror).
hirsutism (n.) Look up hirsutism at Dictionary.com
1927, from hirsute + -ism.
his (pron.) Look up his at Dictionary.com
Old English his (genitive of he), from Proto-Germanic *hisa (cognates: Gothic is, German es). Originally also the neuter possessive pronoun, but replaced in that sense c. 1600 by its. In Middle English, hisis was tried for the absolute pronoun (compare her/hers), but it failed to stick. For dialectal his'n, see her.
Hispania Look up Hispania at Dictionary.com
Latin name for the Iberian peninsula, literally "country of the Spaniards;" see Hispanic.
Hispanic (adj.) Look up Hispanic at Dictionary.com
"pertaining to Spain" (especially ancient Spain) 1580s, from Latin Hispanicus, from Hispania "Iberian Peninsula," from Hispanus "Spaniard" (see Spaniard). Specific application to Spanish-speaking parts of the New World is 1889, American English; especially applied since c. 1972 to Spanish-speaking persons of Latin American descent living in U.S.
Hispaniola Look up Hispaniola at Dictionary.com
West Indian island, from Spanish la isla española "the Spanish island" (not "little Spain"); name said to have been given by Columbus in 1492.
hiss (v.) Look up hiss at Dictionary.com
late 14c., of imitative origin. Johnson wrote, "it is remarkable, that this word cannot be pronounced without making the noise which it signifies." Related: Hissed; hissing.
hiss (n.) Look up hiss at Dictionary.com
1510s, from hiss (v.).
hisself (pron.) Look up hisself at Dictionary.com
see himself. The shift in felt meaning of the first element of this compound from dative to gentitive created this new word c. 1400, whereas the same process did not change herself.
hissing (n.) Look up hissing at Dictionary.com
late 14c., hissyng, of imitative origin (see hiss (v.)), but originally also "whistling." In both senses expressing opprobrium.
hissy (adj.) Look up hissy at Dictionary.com
1905, from hiss + -y (2). Hissy fit is attested by 1983.
hist Look up hist at Dictionary.com
exclamation commanding silence, attested from 1610s; probably so chosen because the sound is both easy to hear and suddenly silent.
histamine (n.) Look up histamine at Dictionary.com
1913, "amine produced by the decomposition of histidine."
histidine (n.) Look up histidine at Dictionary.com
complex amino acid, 1896, from German histidin; see histo- + chemical suffix -idine.
histo- Look up histo- at Dictionary.com
medical word-forming element, from Greek histos "warp, web," literally "anything set upright," from histasthai "to stand," from PIE *sta- "to stand" (see stet). Taken by 19c. medical writers as the best Greek root from which to form terminology for "tissue."
histogram (n.) Look up histogram at Dictionary.com
1891, from histo- + -gram.
histology (n.) Look up histology at Dictionary.com
"study of organic tissues," 1847, from histo- + -ology.
histone (n.) Look up histone at Dictionary.com
1885, from German histon (1884); see histo- + -one.
historian (n.) Look up historian at Dictionary.com
mid-15c., from Middle French historien (14c.), from Latin historia (see history). As "writer of history in the higher sense" (distinguished from a mere annalist or chronicler), from 1530s. The Old English word was þeod-wita.
[T]he historian's fallacy is the error of assuming that a man who has a given historical experience knows it, when he has had it, to be all that a historian would know it to be, with the advantage of historical perspective. [David Hackett Fischer, "Historians' Fallacies," 1970]
historiaster (n.) Look up historiaster at Dictionary.com
"petty or contemptible historian," 1887, from historian with ending altered to -aster.
historic (adj.) Look up historic at Dictionary.com
1660s, probably a back-formation from historical, perhaps influenced by French historique. What is historic is noted or celebrated in history; what is historical deals with history.
historical (adj.) Look up historical at Dictionary.com
early 15c. (earlier in same sense was historial, late 14c.), from Latin historicus (from Greek historikos "historical, of or for inquiry," from historia; see history) + -al (1). Related: Historically.
historicism (n.) Look up historicism at Dictionary.com
1895, translating German historismus, from historic + -ism. Given various senses 20c. in theology, philosophy, architecture, etc.
historicity (n.) Look up historicity at Dictionary.com
1880, from Latin historicus (see historical) + -ity.
historico- Look up historico- at Dictionary.com
word-forming element meaning "historical," from Latinized comb. form of Greek historikos (see historical).
historify (v.) Look up historify at Dictionary.com
1580s, from history + -ify. Related: Historified; historifying.
historiography (n.) Look up historiography at Dictionary.com
1560s; see from history + -graphy. Related: Historiographer.
history (n.) Look up history at Dictionary.com
late 14c., "relation of incidents" (true or false), from Old French estoire, estorie "chronicle, history, story" (12c., Modern French histoire), from Latin historia "narrative of past events, account, tale, story," from Greek historia "a learning or knowing by inquiry; an account of one's inquiries, history, record, narrative," from historein "inquire," from histor "wise man, judge," from PIE *wid-tor-, from root *weid- "to know," literally "to see" (see vision).

Related to Greek idein "to see," and to eidenai "to know." In Middle English, not differentiated from story; sense of "record of past events" probably first attested late 15c. As a branch of knowledge, from 1842. Sense of "systematic account (without reference to time) of a set of natural phenomena" (1560s) is now obsolete except in natural history.
One difference between history and imaginative literature ... is that history neither anticipates nor satisfies our curiosity, whereas literature does. [Guy Davenport, "Wheel Ruts," 1996]
histrionic (adj.) Look up histrionic at Dictionary.com
"theatrical" (figuratively, "hypocritical"), 1640s, from Latin histrionicus "pertaining to an actor," from histrio (genitive histrionis) "actor," said to be of Etruscan origin. The literal sense in English is from 1759.
histrionics (n.) Look up histrionics at Dictionary.com
"theatrics, pretense," 1864, from histrionic; also see -ics.
hit (v.) Look up hit at Dictionary.com
late Old English hyttan, hittan "come upon, meet with, fall in with, 'hit' upon," from a Scandinavian source such as Old Norse hitta "to light upon, meet with," also "to hit, strike;" Swedish hitta "to find," Danish and Norwegian hitte "to hit, find," from Proto-Germanic *hitjan, of uncertain origin. Related: Hitting. Meaning shifted in late Old English period to "strike," via "to reach with a blow or missile," and replaced Old English slean in this sense. Original sense survives in phrases such as hit it off (1780, earlier in same sense hit it, 1630s) and is revived in hit on (1970s).

Underworld slang meaning "to kill by plan" is 1955 (as a noun in this sense from 1970). To hit the bottle "drink alcohol" is from 1889. To hit the nail on the head (1570s) is from archery. Hit the road "leave" is from 1873; to hit (someone) up "request something" is from 1917. Hit and run is 1899 as a baseball play, 1924 as a driver failing to stop at a crash he caused. To not know what hit (one) is from 1923.
hit (n.) Look up hit at Dictionary.com
late 15c., "a rebuke;" 1590s as "a blow," from hit (v.). Meaning "successful play, song, person," etc., 1811, is from the verbal sense of "to hit the mark, succeed" (c. 1400). Underworld slang meaning "a killing" is from 1970. Meaning "dose of narcotic" is 1951, from phrases such as hit the bottle.
hitch (v.) Look up hitch at Dictionary.com
mid-15c., probably from Middle English icchen "to move as with a jerk, to stir" (c. 1200). It lacks cognates in other languages. The connection with icchen may be in notion of "hitching up" pants or boots with a jerking motion. Sense of "become fastened," especially by a hook, first recorded 1570s, originally nautical. Meaning "to marry" is from 1844 (to hitch horses together "get along well," especially of married couples, is from 1837, American English). Short for hitchhike (v.) by 1931. Related: Hitched; hitching.
hitch (n.) Look up hitch at Dictionary.com
1660s, "a limp or hobble;" 1670s, "an abrupt movement," from hitch (v.). Meaning "a means by which a rope is made fast" is from 1769, nautical. The sense of "obstruction" is first recorded 1748; military sense of "enlistment" is from 1835.
hitcher (n.) Look up hitcher at Dictionary.com
1620s, "a hook, boat-hook," agent noun from hitch (v.). Meaning "hitchhiker" is from 1960.
hitchhike Look up hitchhike at Dictionary.com
1921 (n.), 1923 (v.), from hitch, from the notion of hitching a sled to a moving vehicle (a sense first recorded 1880) + hike. Related: Hitchhiked; hitchhiking. Hitchhiker attested from 1927.
hithe (n.) Look up hithe at Dictionary.com
"landing place" (archaic, but still found in place names), from Old English hyð "landing place," especially one on a river or creek, cognate with Old Saxon huth.
hither (adv.) Look up hither at Dictionary.com
Old English hider, from Proto-Germanic *hideran (cognates: Old Norse heðra "here," Gothic hidre "hither"), from Germanic demonstrative base *hi- (compare he, here). Spelling change from -d- to -th- is the same evolution seen in father, etc. Relation to here is the same as that of thither to there.