The Collaborative International Dictionary of English v.0.48:
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. [1913 Webster]WordNet (r) 3.0 (2006):
labiodental n 1: a consonant whose articulation involves the lips and teeth [syn: labiodental consonant, labiodental]