| var. of ornitho- before a vowel: ornithoid. |
| a combining form meaning “bird,” used in the formation of compound words: ornithology. |
| ornith- pref. Variant of ornitho-. |
| ornitho- or ornith- pref. Bird: ornithosis. [New Latin ornītho-, from Greek, from ornīs, ornīth-, bird; see or- in Indo-European roots.] |