zoologyEnglishOxford Dictionary of Englishzoology /zuːˈɒlədʒi , zəʊˈɒlədʒi / ▸ noun [mass noun] the scientific study of the behaviour, 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).