zoologyEnglishOxford New American Dictionaryzoology /zōˈäləjē, , zoʊˈɑlədʒi , zo͞oˈäləjē, zuˈɑlədʒi / ▸ noun the scientific study of the behavior, structure, physiology, classification, and distribution of animals. ▪ the animal life of a particular area or time: the zoology of Russia's vast interior. – ORIGIN mid 17th century : from modern Latin zoologia(see zoo-, -logy).