a combining form meaning “bird,” used in the formation of compound words:
bird or birds: ornithology, ornithomancy, ornithopter, ornithoscopy, ornithosis
before vowels ornith-, word-forming element meaning “bird, birds,” from comb. form of Greek ornis (genitive ornithos) “a bird” (in Attic generally “domestic fowl”), often added to the specific name of the type of bird, from PIE *or- “large bird” (see erne).
Ornithodoros Or·ni·thod·o·ros (ôr’nə-thŏd’ə-rəs) n. A genus of soft ticks, several species of which are vectors of pathogens of various relapsing fevers.
[awr-nuh-thoid] /ˈɔr nəˌθɔɪd/ adjective 1. resembling a bird.
1. . 2. . abbreviation 1. ornithological 2. ornithology
[awr-nuh-thol-uh-jee] /ˌɔr nəˈθɒl ə dʒi/ noun 1. the branch of zoology that deals with birds. /ˌɔːnɪˈθɒlədʒɪ/ noun 1. the study of birds, including their physiology, classification, ecology, and behaviour adj. 1802, from ornithology + -ical. Related: Ornithologically. n. 1670s, from Modern Latin ornithologia (1590s); see ornitho- + -logy. ornithology (ôr’nə-thŏl’ə-jē) The scientific study of birds.