Definition of vespertilionid in English:



  • A bat of a large family (Vespertilionidae) that includes most of the typical insectivorous bats of northern temperate regions.

    • ‘The vespertilionid genus Myotis has the widest distribution of all bat genera.’
    • ‘Many vespertilionids live in caves, but these bats can also be found in mine shafts, tunnels, tree roosts, rock crevices, buildings, etc.’
    • ‘For comparison, respirometric data were also obtained from Nyctalus noctula, a hibernating vespertilionid bat of similar body size and convergent foraging habits.’
    • ‘Vespertilionids have the longest span, largest wing area and lowest wing loading in relation to body mass of the bat groups for which regression lines were calculated.’
    • ‘Like many vespertilionid bats, females of some rhinolophid species mate during the fall and store the sperm over the winter, conceiving and gestating young beginning in the spring.’


Late 19th century: from modern Latin Vespertilionidae (plural), from Latin vespertilio bat.