The Collaborative International Dictionary
Labiodental
Labiodental \La`bi*o*den"tal\, a. [Labium + dental.] (Phonetics) Formed or pronounced by the cooperation of the lips and teeth, as f and v. -- n. A labiodental sound or letter.
Wiktionary
labiodental
a. (context phonetics English) articulated with the lower lip and upper teeth n. (context phonetics English) A speech sound articulated with the lower lip and upper teeth.