The American Heritage® Dictionary of the English Language, 4th Edition
n. The branch of biology that deals with animals and animal life, including the study of the structure, physiology, development, and classification of animals.
n. The animal life of a particular area or period: the zoology of Alaska; the zoology of the Pleistocene.
n. The characteristics of a particular animal group or category: the zoology of mammals.
n. that part of biology which relates to the animal kingdom, including the structure, embryology, evolution, classification, habits, and distribution of all animals, both living and extinct.
n. a treatise on this science.
Word Usage
"Adonis _Adonis_ apropos _apropo_ bowsprit _bowsprit_ brooch _broch_ not _broosh_ compromise _compromize_ jowl _jol_, not like _owl_ molecular _molecular_ ogle _ogle_ trow _tro_ vocable _vocable_ zoology _zoology_, not _zoo_"