Longman Dictionary of Contemporary English homepage

Date: 1600-1700
Language: Modern Latin
Origin: ornithologia, from Greek ornis 'bird'

ornithology

 noun
     
Related topics: Birds
or‧ni‧thol‧o‧gy [uncountable]
HBB the scientific study of birds
—ornithological adjective
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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