family Vespertilionidae fa·mi·ly·vespertilionidae uncommon noun 1. the majority of common bats of temperate regions of the world SynonymsVespertilionidaefamily Vespertilionidae Related words Broader terms mammal family Parts Microchiroptera Part of vespertilian batVespertilioLasiurusMyotisEptesicusAntrozousPipistrellusEuderma WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
