Noun | 1. | ![]() animal order - the order of animals class Hexapoda, class Insecta, Hexapoda, Insecta - insects; about five-sixths of all known animal species odonate - large primitive predatory aquatic insect having two pairs of membranous wings Anisoptera, suborder Anisoptera - dragonflies suborder Zygoptera, Zygoptera - damselflies |