Entry 1 sense Webster, 1913 Labiodental · La·bi·o·den·tal · IPA /ˌleɪ.bi.oʊˈdɛn.təl/ 01 a. Formed or pronounced by the cooperation of the lips and teeth, as f and v. 1. Formed or pronounced by the cooperation of the lips and teeth, as f and v.(Phonetics)