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ornithology
From The Collaborative International Dictionary of English v.0.48:
Ornithology \Or`ni*thol"o*gy\, n. [Ornitho- + -logy: cf. F.
ornithologie.]
1. That branch of Zoology which treats of the natural history
of birds and their classification.
[1913 Webster]
2. A treatise or book on this science.
[1913 Webster]
