The Collaborative International Dictionary of English v.0.48:
Odonata \O*don"a*ta\, n. pl. [NL., fr. Gr. 'odoy`s, 'odo`ntos, a tooth.] (Zool.) The division of insects that includes the dragon flies. [1913 Webster]WordNet (r) 3.0 (2006):
Odonata n 1: dragonflies and damselflies [syn: Odonata, order Odonata]