Main Entry: or·ni·thol·o·gy

Pronunciation: \ˌȯr-nə-ˈthä-lə-jē\

Function: noun

Inflected Form(s): plural or·ni·thol·o·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 \-thə-ˈlä-ji-kəl\ also or·ni·tho·log·ic \-jik\ adjective

— or·ni·tho·log·i·cal·ly \-ji-k(ə-)lē\ adverb

— or·ni·thol·o·gist \-ˈthä-lə-jist\ noun