[ves-per-til-ee-uh-nahyn, -nin] 
| of or pertaining to the bats of the subfamily Vespertilioninae, common in temperate regions and including most familiar species. |
| ves·per·til·i·o·nid (věs'pər-tĭl'ē-ə-nĭd) n. Any of various widely distributed insect-eating bats of the family Vespertilionidae, characterized by a long tail. adj. Of or belonging to the family Vespertilionidae. [From New Latin Vespertiliōnidae, family name, from Vespertiliō, Vespertiliōn-, type genus, from Latin vespertiliō, bat, from vesper, evening; see wes-pero- in Indo-European roots.] |
pərˈtɪl