Ornithology
Pronunciation : Or`ni*thol"o*gy
Part of Speech : n.
Etymology : [Ornitho- + -logy: cf. F. ornithologie.]
Definition : 1. That branch of zo?logy which treats of the natural history of birds and their classification.
2. A treatise or book on this science.
Source : Webster's Unabridged Dictionary, 1913