英语词源字典 - 在线词源网站

ophthalmoscope (n.)[ophthalmoscope 词源字典]: 1857 in English; coined 1852 by German physician and physicist Hermann Ludwig Ferdinand von Helmholtz (1821â1894) from ophthalmo- + -scope.[ophthalmoscope etymology, ophthalmoscope origin, 英语词源]
opiate (n.): "medicine containing opium," early 15c., from Medieval Latin opiatus, from Latin opium (see opium). Figurative sense of "anything that dulls the feelings" is from 1640s. From 1540s in English as an adjective, "made with or containing opium."
opine (v.): "express an opinion," mid-15c., from Middle French opiner (15c.) and directly from Latin opinari "have an opinion, be of opinion, suppose, conjecture, think, judge," perhaps related to optare "to desire, choose" (see option). Related: Opined; opining.
opiniated (adj.): "obstinately attached to one's opinion," 1590s, past participle adjective from opiniate (from Latin opinio), a verb where now we use opine. Also see opinion.
opinion (n.): c. 1300, from Old French opinion "opinion, view, judgements founded upon probabilities" (12c.), from Latin opinionem (nominative opinio) "opinion, conjecture, fancy, belief, what one thinks; appreciation, esteem," from stem of opinari "think, judge, suppose, opine," from PIE *op- (2) "to choose" (see option).
Where there is much desire to learn, there of necessity will be much arguing, much writing, many opinions; for opinion in good men is but knowledge in the making. [Milton, "Areopagitica"]
opinionate (v.): "to hold an opinion," c. 1600, from opinion + -ate (2); now surviving mostly in past participle adjective opinionated.
opinionated (adj.): "obstinate," c. 1600, past participle adjective from opinionate.
opioid (n.): 1957, from opium + -oid.
opium (n.): late 14c., from Latin opium, from Greek opion "poppy juice, poppy," diminutive of opos "vegetable juice."
Die Religion ist der Seufzer der bedrängten Kreatur, das Gemüth einer herzlosen Welt, wie sie der Geist geistloser Zustände ist. Sie ist das Opium des Volks. [Karl Marx, "Zur Kritik der Hegel'schen Rechts-Philosophie," in "Deutsch-Französische Jahrbücher," February, 1844]
The British Opium War against China lasted from 1839-42; the name is attested from 1841.
opossum (n.): 1610, from Powhatan (Algonquian) opassum, "equivalent to a proto-Algonquian term meaning 'white dog'" [Bright].
opponent (n.): 1580s, from Latin opponentem (nominative opponens), present participle of opponere "oppose, object to," literally "set against, set opposite," from ob "against" (see ob-) + ponere "to put, set, place" (see position (n.)).
opportune (adj.): c. 1400, from Old French opportun and directly from Latin opportunus "fit, convenient, suitable, favorable," from the phrase ob portum veniens "coming toward a port," in reference to the wind, from ob "to, toward" (see ob-) + portus "harbor" (see port (n.1)). Related: Opportunely.
opportunism (n.): "policy of adopting actions to circumstances while holding goals unchanged," 1870, from opportune + -ism. Compare opportunist.
opportunist (n.): 1881, from opportunism (q.v.) + -ist. A word in Italian politics, later applied in French by Rochefort to Gambetta (1876) and then generally in English to any who seek to profit from the prevailing circumstances.
opportunistic (adj.): 1889, see opportunist + -ic. Related: Opportunistically.
opportunity (n.): late 14c., from Old French opportunite (13c.) and directly from Latin opportunitatem (nominative opportunitas) "fitness, convenience, suitableness, favorable time," from opportunus (see opportune). Opportunity cost attested from 1911. Expression opportunity knocks but once (at any man's door) attested from 1898.
opposable (adj.): 1660s, "capable of being withstood," from oppose + -able. In reference to human thumbs, from 1833. Related: Opposability.
oppose (v.): late 14c., from Old French oposer "oppose, resist, rival; contradict, state opposing point of view" (12c.), from poser "to place, lay down" (see pose (v.1)), blended with Latin opponere "oppose, object to, set against" (see opponent). Related: Opposed; opposing.
opposite (adj.): late 14c., "placed on the other side of (something)," from Old French oposite "opposite, contrary" (13c.), from Latin oppositus "standing against, opposed, opposite," past participle of opponere "set against" (see opponent). Meaning "contrary in nature or character" is from 1570s. As a noun from late 14c. As a preposition from 1758. As an adverb from 1817. Related: Oppositely.
opposition (n.): late 14c., an astrological term for the situation of two heavenly bodies exactly across from one another in the heavens, from Old French oposicion (12c.) or directly from Latin oppositionem (nominative oppositio) "act of opposing, a placing against," noun of action from past participle stem of opponere "set against" (see opponent). Meaning "that which is opposite something else" is from 1540s; meaning "contrast, antagonism" first attested 1580s; sense of "political party opposed to the one in power" is from 1704. Related: Oppositional.