ornithology Meaning, Definition & Usage

  1. noun the branch of zoology that studies birds

WordNet

Or`ni*thol"o*gy noun
Etymology
Ornitho- + -logy: cf. F. ornithologie.
Definitions
  1. That branch of zoölogy which treats of the natural history of birds and their classification.
  2. A treatise or book on this science.

Webster 1913