英语词源字典 - 在线词源网站

ornithopod (n.)[ornithopod 词源字典]: 1888, from Modern Latin Ornithopoda (1881), from ornitho- + Greek podos, genitive of pous "foot," from PIE root *ped- (1) "a foot" (see foot (n.)).[ornithopod etymology, ornithopod origin, 英语词源]
ornithopter (n.): 1908, from French ornithoptère (1908), a machine designed to fly be mechanical flapping of wings, from ornitho- + Greek pteron "wing" (see pterodactyl). A mode of flight considered promising at least since Leonardo's day.
oro-: word-forming element meaning "mountain," from Greek oros "mountain" (see oread).
orogeny (n.): "mountain forming," 1890, from French orogénie; see oro- + -geny. Related: Orogenic.
orotund (adj.): 1792, from Latin ore rotundo "in well-rounded phrases," literally "with round mouth" (see ore rotundo).
The odd thing about the word is that its only currency, at least in its non-technical sense, is among those who should most abhor it, the people of sufficient education to realize its bad formation; it is at once a monstrosity in its form & a pedantry in its use. [Fowler]
orphan (v.): 1814, from orphan (n.). Related: Orphaned; orphaning.
orphan (n.): c. 1300, from Late Latin orphanus "parentless child" (source of Old French orfeno, Italian orfano), from Greek orphanos "orphaned, without parents, fatherless," literally "deprived," from orphos "bereft," from PIE *orbho- "bereft of father," also "deprived of free status," from root *orbh- "to change allegiance, to pass from one status to another" (cognates: Hittite harb- "change allegiance," Latin orbus "bereft," Sanskrit arbhah "weak, child," Armenian orb "orphan," Old Irish orbe "heir," Old Church Slavonic rabu "slave," rabota "servitude" (see robot), Gothic arbja, German erbe, Old English ierfa "heir," Old High German arabeit, German Arbeit "work," Old Frisian arbed, Old English earfoð "hardship, suffering, trouble"). As an adjective from late 15c.
orphanage (n.): 1570s, "condition of being an orphan," from orphan (n.) + -age. Meaning "home for orphans" is from 1865 (earlier was orphan house, 1711).
Orphic (adj.): 1670s, from Greek orphikos "pertaining to Orpheus," master musician of Thrace, son of Eagrus and Calliope, husband of Eurydice, whose name (of unknown origin) was associated with mystic doctrines. Related: Orphism.
orpiment (n.): late 13c., from Old French orpiment "arsenic trisulphide, yellow color," from Latin auripigmentum, from aurum "gold" (see aureate) + pigmentum "coloring matter, pigment, paint" (see pigment).
orrery (n.): 1713, invented c. 1713 by George Graham and made by instrument maker J. Rowley, who gave a copy to his patron, Charles Boyle, 4th Earl of Orrery (Cork) and named it in his honor.
Orson: masc. proper name, from French ourson, diminutive of ours "bear," from Latin ursus (see Arctic).
ort (n.): "remains of food left from a meal," mid-15c., probably cognate with early Dutch ooraete, Low German ort, from or-, privative prefix, + etan "to eat" (see eat (v.)). Perhaps from an unrecorded Old English word.
ortho-: before vowels orth-, word-forming element meaning "straight, upright, rectangular, regular; true, correct, proper," now mostly in scientific and technical compounds, from Greek ortho-, stem of orthos "straight, true, correct, regular," from PIE *eredh- "high" (cognates: Sanskrit urdhvah "high, lofty, steep," Latin arduus "high, steep," Old Irish ard "high").
orthodontia (n.): 1849, from ortho- + Greek odon (genitive odontos) "tooth" (see tooth) + abstract noun ending -ia.
orthodontics (n.): 1909, from Modern Latin orthodontia + -ics.
orthodontist (n.): 1903; see orthodontia + -ist.
orthodox (adj.): mid-15c., of opinions, faith, from Late Latin orthodoxus, from Greek orthodoxos "having the right opinion," from orthos "right, true, straight" (see ortho-) + doxa "opinion, praise," from dokein "to seem," from PIE root *dek- "to take, accept" (see decent). As the name of the Eastern Church, first recorded in English 1772; in reference to a branch of Judaism, first recorded 1853.
orthodoxy (n.): 1620s, from French orthodoxie and directly from Late Latin orthodoxia, from late Greek orthodoxia "right opinion," noun of quality from orthodoxos (see orthodox).
orthogonal (adj.): 1570s, from French orthogonal, from orthogone, from Late Latin orthogonius, from Greek orthogonios "right-angled," from ortho- "straight" (see ortho-) + gonia "angle" (see -gon). Related: Orthogonally.