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Definition of ornithological adjective from the Oxford Advanced Learner's Dictionary

ornithological

adjective
 
/ˌɔːnɪθəˈlɒdʒɪkl/
 
/ˌɔːrnɪθəˈlɑːdʒɪkl/
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  1. connected with the scientific study of birds
    • ornithological research
era
noun
 
 
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