Pronunciation: ˌ o ̇ r-n ə - ' thä-l ə -j ē
Function: noun
Inflected Form: plural -gies
Etymology: New Latin ornithologia, from ornith- + -logia -logy
Date: 1676
1 : a treatise on ornithology
2 : a branch of zoology dealing with birds
– or · ni · tho · log · i · cal \ -th ə - ' lä-ji-k ə l \ also or · ni · tho · log · ic \ -jik \ adjective
– or · ni · tho · log · i · cal · ly \ -ji-k( ə -)l ē \ adverb
– or · ni · thol · o · gist \ - ' thä-l ə -jist \ noun