English borrowed New Latin ornithologia, formed with Greek-derived elements.
The New Latin name for the discipline was constructed from Greek-derived pieces.
Sources
- Merriam-Webster: ornithology
The discipline entered through New Latin.
- Merriam-Webster: ornith-
The component denotes birds and derives from Greek ornith-, ornis.
- Merriam-Webster: -logy
The discipline ending passes through Latin from Greek.
- Online Etymology Dictionary: -logy
Also built on *-logy*, from Greek *-logia*: biology, anthropology
- Online Etymology Dictionary · ornithology
Meanings of the older forms on the word path.