APA Dictionary of Psychology
labial
- adj. of or relating to the lips.
- adj. denoting a speech sound made with the lips, for example, [b], [p], [m], [w], [f], or [v]. If the sound is made with both lips, it is described as bilabial; if the sound is made with the lower lip and the upper teeth, it is termed labiodental.
- n. a labial speech sound.
Updated on 04/19/2018
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