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hetero-[hetero- 词源字典]: word-forming element meaning "other, different," from comb. form of Greek heteros "the other (of two), another, different;" first element meaning "one, at one, together," from PIE *sem- "one;" the second cognate with the second element in Latin al-ter, Gothic an-þar, Old English o-ðer "other."[hetero- etymology, hetero- origin, 英语词源]
heterodox (adj.): 1630s, from Greek heterodoxos, from heteros "the other" (see hetero-) + doxa "opinion," from dokein "to appear, seem, think" (see decent).
heterodoxy (n.): 1650s, from Greek heterodoxia "error of opinion," from heterodoxos (see heterodox).
heterogeneity (n.): 1640s, from Medieval Latin heterogeneitas, from heterogeneus, from Greek heterogenes (see heterogeneous).
heterogeneous (adj.): 1620s, from Medieval Latin heterogeneus, from Greek heterogenes, from heteros "different" (see hetero-) + genos "kind, gender, race stock" (see genus). Earlier in same sense was heterogeneal (c. 1600).
heterogenous (adj.): 1690s, less-correct form of heterogeneous. Related: Heterogeneity.
heterography (n.): "incorrect spelling," 1783; see hetero- + -graphy. Also "inconsistent but current spellings within a language" (as English, in all ages), 1847.
heteromorphic (adj.): "having different or dissimilar forms," 1864; from hetero- + Greek morphe "form" (see Morpheus).
heteronomy (n.): 1798, "subjection to the rule of another power," from hetero- + Greek nomos "law" (see numismatics). Related: Heteronomic; heteronomous.
heteronym (n.): "word having the same spelling as another but with a different sound and meaning," 1880s, also "a thing's name in one language that is an exact translation of its name in another;" from hetero- + -onym "name" (see name (n.)). Related: Heteronymic; heteronymous.
heterophemy (n.): "the (unintentional) use of some other word or phrase in place of the one that was meant," 1875, from hetero- + Greek pheme "utterance," from PIE root *bha- (2) "to speak, tell, say" (see fame (n.)).
heterosexist (adj.): "characteristic of discrimination against homosexuals," 1979; see hetero- + sexist. Related: Heterosexism (1979).
heterosexual (adj.): 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.): 1900; see heterosexual + -ity.
heterotroph (n.): 1900, from hetero- + Greek trophos "feeder" (see -trophy). Related: Heterotrophic (1893).
heterozygous (adj.): 1889, from heterozygote, from hetero- + zygote.
hetman (n.): "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.): "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.): "study of heuristic methods," 1897, from heuristic (n.); also see -ics.
hew (v.): 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.