heterosexist (adj.) Look up heterosexist at Dictionary.com
"characteristic of discrimination against homosexuals," 1979; see hetero- + sexist. Related: Heterosexism (1979).
heterosexual (adj.) Look up heterosexual at Dictionary.com
1892, in C.G. Craddock's translation of Krafft-Ebbing's "Psychopathia Sexualis," a hybrid; see hetero- + sexual. The noun is recorded from 1920, but not in common use until 1960s. Colloquial shortening hetero is attested from 1933.
heterosexuality (n.) Look up heterosexuality at Dictionary.com
1900; see heterosexual + -ity.
heterotroph (n.) Look up heterotroph at Dictionary.com
1900, from hetero- + Greek trophos "feeder" (see -trophy). Related: Heterotrophic (1893).
heterozygous (adj.) Look up heterozygous at Dictionary.com
1889, from heterozygote, from hetero- + zygote.
hetman (n.) Look up hetman at Dictionary.com
"Cossack commander," 1710, from Polish hetman, apparently from an early form of German Hauptmann "captain," literally "headman," from Haupt "head" (see head (n.)) + Mann (see man (n.)).
heuristic (adj.) Look up heuristic at Dictionary.com
"serving to discover or find out," 1821, irregular formation from Greek heuretikos "inventive," related to heuriskein "to find" (from PIE *were- (2) "to find;" cognate with Old Irish fuar "I have found") + -istic. As a noun, from 1860.
heuristics (n.) Look up heuristics at Dictionary.com
"study of heuristic methods," 1897, from heuristic (n.); also see -ics.
hew (v.) Look up hew at Dictionary.com
Old English heawan "to chop, hack, gash" (class VII strong verb; past tense heow, past participle heawen), earlier geheawan, from Proto-Germanic *hawwan (cognates: Old Norse hoggva, Old Frisian hawa, Old Saxon hauwan, Middle Dutch hauwen, Dutch houwen, Old High German houwan, German hauen "to cut, strike, hew"), from PIE root *kau- "to hew, strike" (cognates: Old Church Slavonic kovo, Lithuanian kauju "to beat, forge;" Latin cudere "to strike, beat;" Middle Irish cuad "beat, fight").

Weak past participle hewede appeared 14c., but hasn't displaced hewn. Seemingly contradictory sense of "hold fast, stick to" (in phrase hew to) developed from hew to the line "stick to a course," literally "cut evenly with an axe or saw," first recorded 1891. Related: Hewed; hewing.
hewer (n.) Look up hewer at Dictionary.com
"cutter" (of stone or wood), mid-12c. as a surname, agent noun from hew (v.). Hwers of wood and drawers of water as the lowliest sort of physical laborers is from Joshua ix:12.
hewn Look up hewn at Dictionary.com
strong past participle of hew.
hex (v.) Look up hex at Dictionary.com
1830, American English, from Pennsylvania German hexe "to practice witchcraft," from German hexen "to hex," related to Hexe "witch," from Middle High German hecse, hexse, from Old High German hagazussa (see hag). Noun meaning "magic spell" is first recorded 1909; earlier it meant "a witch" (1856).
hexa- Look up hexa- at Dictionary.com
before vowels, hex-, word-forming element meaning "six," from Greek hexa-, comb. form of hex "six" (see six).
hexadecimal Look up hexadecimal at Dictionary.com
1954 (adj.); 1970 (n.); from hexa- + decimal.
hexagon (n.) Look up hexagon at Dictionary.com
1560s, from Latin hexagonum, from Greek hexagonon, from hex "six" (see hexa-) + gonia "angle" (see -gon).
hexagonal (adj.) Look up hexagonal at Dictionary.com
1570s, from hexagon + -al (1). Related: Hexagonally.
hexagram (n.) Look up hexagram at Dictionary.com
1863 as a type of geometric figure, from hexa- + -gram. I Ching sense attested from 1882.
hexameter (adj.) Look up hexameter at Dictionary.com
1540s, from Latin hexameter, from Greek hexametros, from hex "six" (see hexa-) + metron "meter" (see meter (n.2)). As a noun from 1570s. Related: Hexametric.
hexane (n.) Look up hexane at Dictionary.com
paraffin hydrocarbon, 1872, from Greek hex "six" (see six) + chemical suffix -ane. So called for its six carbon atoms.
hexapod (n.) Look up hexapod at Dictionary.com
1660s, from Greek hex "six" (see six) + pod, from Greek pod-, stem of pous "foot," from PIE root *ped- (1) "a foot" (see foot (n.)). As an adjective from 1856.
hey (interj.) Look up hey at Dictionary.com
c. 1200, implying challenge, rebuttal, anger, derision; variously spelled in Middle English hei, hai, ai, he, heh. Later in Middle English expressing sorrow, or concern; also a shout of encouragement to hunting dogs. Possibly a natural expression (compare Roman eho, Greek eia, German hei, Old French hay, French eh).
Þa onswerede þe an swiðe prudeliche, `Hei! hwuch wis read of se icudd keiser!' ["St. Katherine of Alexandria," c. 1200]
In Latin, hei was a cry of grief or fear; but heia, eia was an interjection denoting joy.
heyday (n.) Look up heyday at Dictionary.com
late 16c., alteration of heyda (1520s), exclamation of playfulness or surprise, something like Modern English hurrah, apparently an extended form of Middle English interjection hey or hei (see hey). Modern sense of "stage of greatest vigor" first recorded 1751, which altered the spelling on model of day, with which this word apparently has no etymological connection.
Hezbollah (n.) Look up Hezbollah at Dictionary.com
extremist Shiite group active in Lebanon, founded c. 1982, from Persian hezbollah, Arabic hizbullah, literally "Party of God," from hezb/hizb "party" + allah "God." An adherent is a Hezbollahi. The name of various Islamic groups in modern times, the name itself is attested in English by 1960 in referense to an Indonesian guerilla battalion of 1945 that "grew out of a similarly named organization formed by the Japanese to give training in military drill to young Moslems."
In Modjokuto (like Masjumi itself, Hizbullah was Indonesia-wide but, also like Masjumi, it had little effective central organization) this group was led by the present head of Muhammadijah -- the same man who a year or so before was going to Djakarta for propaganda training and studying to be a kamikaze. [Clifford Geertz, "The Religion of Java," Chicago, 1960]
Hezekiah Look up Hezekiah at Dictionary.com
masc. proper name, biblical, from Hebrew Hizqiyya, literally "the Lord has strengthened," from hazaq "he was strong, he strengthened" + jah, short for yahweh.
hi Look up hi at Dictionary.com
greeting, 1862, American English (first recorded reference is to speech of a Kansas Indian), originally to attract attention (15c.), probably a variant of Middle English hy, hey (late 15c.) also an exclamation to call attention. Extended form hiya attested from 1940.
hi-de-hi Look up hi-de-hi at Dictionary.com
call-and-response exclamation in singing, by 1933, associated with U.S. bandleader Cabell "Cab" Calloway (1907-1994) and especially his signature song "Minnie the Moocher," which dates from 1931.
Calloway recalled in his autobiography that the song came first and the chorus was later improvised when he forgot the lyrics during a radio broadcast. ["Harlem Renaissance Lives," Oxford, 2009]
hi-fi (adj.) Look up hi-fi at Dictionary.com
1947, abbreviation of high fidelity (1934), of radio receivers, in reference to their quality of sound reproduction. Hi as an advertiser's phonetic shortening of high is attested by 1914. Fidelity in the sense "faithful reproduction of sound" is from 1878.
hiatal (adj.) Look up hiatal at Dictionary.com
1906, from stem of hiatus + -al (1).
hiatus (n.) Look up hiatus at Dictionary.com
1560s, "break or opening in a material object," from Latin hiatus "opening, aperture, rupture, gap," from past participle stem of hiare "to gape, stand open" (see yawn (v.)). Sense of "gap or interruption in events, etc." is first recorded 1610s.
hibachi (n.) Look up hibachi at Dictionary.com
1863, from Japanese hibachi "firepot," from hi "fire" + bachi, hachi "bowl, pot," which Watkins derives ultimately from Sanskrit patram "cup, bowl."
hibernacle (n.) Look up hibernacle at Dictionary.com
"winter residence," 1708, from Latin hibernaculum "winter residence, winter quarters," related to hibernare "to winter" (see hibernation) with instrumentive suffix -culum. Related: Hibernacular.
hibernal (adj.) Look up hibernal at Dictionary.com
1620s, from Latin hibernalis "wintry," from hibernus "of winter," from hiems "winter" (see hibernation).
hibernate (v.) Look up hibernate at Dictionary.com
1802, probably a back-formation from hibernation. Related: Hibernated; hibernating.
hibernation (n.) Look up hibernation at Dictionary.com
1660s, from Latin hibernationem (nominative hibernatio) "the action of passing the winter," noun of action from past participle stem of hibernare "to winter, pass the winter, occupy winter quarters;" related to hiems "winter," from PIE *gheim- "snow, winter" (cognates: Sanskrit heman "in winter," Hittite gimmanza, Greek kheima, Old Church Slavonic zima, Lithuanian žiema "winter").
Hibernia Look up Hibernia at Dictionary.com
Roman name for Ireland, from Old Celtic *Iveriu "Ireland" (see Irish). Form altered in Latin as though it meant "land of winter" (see hibernation).
Hibernian Look up Hibernian at Dictionary.com
1630s (adj.), 1709 (n.); see Hibernia + -ian. Related: Hibernianism.
hibiscus (n.) Look up hibiscus at Dictionary.com
1706, from Latin hibiscum, later hibiscus, "marshmallow plant," of unknown origin, perhaps from Gaulish.
hic Look up hic at Dictionary.com
imitation of the sound of hiccuping, attested by 1883 (see hiccup).
hic et nunc Look up hic et nunc at Dictionary.com
Latin, literally "here and now," from demonstrative pronominal adjective of place hic "here" + nunc (see now).
hic jacet Look up hic jacet at Dictionary.com
Latin, hic iacet, "here lies," commonly the first words of Latin epitaphs; from demonstrative pronominal adjective of place hic "here" + iacet "it lies," from iacere "to lie, rest," related to iacere "to throw" (see jet (v.)).
hiccough Look up hiccough at Dictionary.com
1620s, variant of hiccup (q.v.) by mistaken association with cough.
hiccup (n.) Look up hiccup at Dictionary.com
1570s, hickop, earlier hicket, hyckock, "a word meant to imitate the sound produced by the convulsion of the diaphragm" [Abram Smythe Farmer, "Folk-Etymology," London, 1882]. Compare French hoquet, Danish hikke, etc. Modern spelling first recorded 1788; An Old English word for it was ælfsogoða, so called because hiccups were thought to be caused by elves.
hiccup (v.) Look up hiccup at Dictionary.com
1580s; see hiccup (n.).
hiccups (n.) Look up hiccups at Dictionary.com
a bout of hiccupping, by 1723; see hiccup (n.). This often also was called hiccup or the hiccup. An earlier word for it (noun and verb) was yex, imitative, from Old English gesca, geosca.
hick (n.) Look up hick at Dictionary.com
late 14c. as a pet form of masc. proper name Richard. Meaning "awkward provincial person" was established by 1700 (see rube); earlier it was the characteristic name of a hosteler, hackneyman, etc. (late 14c.), perhaps via alliteration. The adjective is recorded by 1914.
A hick town is one where there is no place to go where you shouldn't be. [attributed to U.S. humorist Robert Quillen (1887-1948)]
hickey (n.) Look up hickey at Dictionary.com
see hickie.
hickie (n.) Look up hickie at Dictionary.com
"love bite; mark on skin made by biting or sucking during foreplay or sex," 1934; earlier "pimple, skin lesion" (c. 1915); perhaps a sense extension and spelling variation from earlier word meaning "small gadget, device; any unspecified object" (1909, see doohickey, still used in this sense).
hickory (n.) Look up hickory at Dictionary.com
1670s, American English, from Algonquian (perhaps Powhatan), shortening of pockerchicory or a similar name for this species of walnut. Old Hickory as the nickname of U.S. politician Andrew Jackson is first recorded 1827.
hickscorner (n.) Look up hickscorner at Dictionary.com
"libertine scoffer at religion and the religious," c. 1530, from the name of the character in a work of that name printed c. 1512 by Wynkyn de Worde; from Hick, the common masc. nickname, + scorner.
Hicksite Look up Hicksite at Dictionary.com
1828, noun and adjective, in reference to a seceding group of American Quakers, from the name of their spiritual leader, Elias Hicks. The remainder were known as Orthodox Friends.