ˌōd ə nˈäd.ə, -ˈād.ə; ōˈdänəd.ə noun plural
Usage: capitalized
Etymology: New Latin, irregular from Greek odōn tooth + New Latin -ata
: an order of insects containing the dragonflies and damselflies and characterized by aquatic larvae that are nymphs or naiads and by predaciousness in both adult and larval forms