英语词源字典 - 在线词源网站

operationalization (n.)[operationalization 词源字典]: 1966, noun of action from operationalize.[operationalization etymology, operationalization origin, 英语词源]
operationalize (v.): 1954, from operational + -ize. Related: Operationalized; operationalizing.
operative (adj.): "producing the intended effect," early 15c., from Old French operatif (14c.) or directly from Late Latin operativus "creative, formative," from operat-, past participle stem of operari (see operation). Weakened sense of "significant, important" is from 1955.
operative (n.): "worker, operator," 1809, from operative (adj.); sense of "secret agent, spy" is first attested 1930, probably from its use by the Pinkerton Detective Agency as a title for their private detectives (1905).
operator (n.): 1590s, "one who performs mechanical or surgical operations," agent noun from operate (v.) or from Late Latin operator. Meaning "one who carries on business shrewdly" is from 1828. Specific sense of "one who works a telephone switchboard" (1884) grew out of earlier meaning "one who works a telegraph" (1847).
operculum (n.): 1713, from Latin operculum "cover, lid," from operire "to cover, close" (see weir), with instrumental suffix *-tlom. Related: Opercular.
operetta (n.): "light opera," 1775, from Italian operetta, diminutive of opera.
operose (adj.): "involving much labor," 1670s, from Latin operosus "taking great pains, laborious, active, industrious," from opus (genitive operis) "work" (see opus). Related: Operosity.
Ophelia: fem. proper name, from Greek opheleia "help, aid," from ophelein "to help, aid, assist," ophelos "advantage, help," from PIE root *obhel- "to avail" (cognates: Greek ophelos "advantage," Armenian avelum "increase, abound").
ophidian (adj.): "pertaining to snakes," 1883, from Greek ophidion, diminutive of ophis "serpent" (see ophio-). Hence, ophiolatry "serpent-worship" (1862), and the 2c. sect of the Ophitæ, who revered the serpent as the symbol of divine wisdom.
ophidiophobia (n.): 1914, "excessive fear of snakes or reptiles," from ophidio- apparently extracted from Modern Latin ophidia, a word coined arbitrarily (to provide an -ia form to serve as an order name in taxonomy) from Greek ophis "serpent" (see ophio-) + -phobia.
ophio-: before vowels ophi-, word-forming element meaning "a snake, serpent," from Greek ophio-, comb. form of ophis "serpent, a snake," from PIE *ogwhi-.
ophiomancy (n.): ancient art of divination by the movements of snakes, 1680s, from ophio- + -mancy. Related: Ophiomantic; ophiomancer.
Ophir: name of a place mentioned in Old Testament as a source for fine gold; location still unknown. Hence Ophir-gold (1610s).
Ophiuchus: constellation (representing Aesculapius), 1650s, from Latin, from Greek ophioukhos, literally "holding a serpent," from ophis "serpent" (see ophio-) + stem of ekhein "to hold, have, keep" (see scheme (n.)). The constellation is equatorial, and Milton's "Ophiuchus huge in th' Arctick Sky" ("Paradise Lost") is a rare lapse for a poet who generally knew his astronomy.
ophthalmia (n.): "inflammation of the eye, conjunctivitis," late 14c., from Medieval Latin obtalmia, Old French obtalmie, from Late Latin ophthalmia, or directly from Greek ophthalmia, from ophthalmos (see ophthalmo-) + -ia.
ophthalmic (adj.): "pertaining to the eye," early 18c., from Latin ophthalmicus, from Greek ophthalmikos "pertaining to the eye," from ophthalmos "eye" (see ophthalmo-).
ophthalmo-: before vowels ophthalm-, word-forming element meaning "eye," mostly in plural, "the eyes," from Greek ophthalmo-, comb. form of ophthalmos "eye," originally "the seeing," of uncertain origin. Perhaps from ops "eye" (see optic) + a form related to thalamos "inner room, chamber" (see thalamus), giving the whole a sense of "eye and eye socket."
ophthalmologist (n.): 1834; see ophthalmology + -ist.
ophthalmology (n.): 1842; see ophthalmo- + -logy. Related: Ophthalmological.