Labial

Labial refers to any anatomical feature that is related to the lips. The term is derived from the Latin word "labium" which means "lip". Labial can refer to different aspects in various fields of study such as linguistics, dentistry, and biology.

Linguistics

In linguistics, labial refers to a type of consonant produced by obstructing the airflow in the vocal tract with the lips. There are three types of labial consonants: bilabial, labiodental, and labial-velar.

• Bilabial consonants are produced by bringing both lips together. Examples of bilabial consonants in English include /p/ and /b/ as in "pat" and "bat".
• Labiodental consonants are produced by touching the bottom lip to the upper teeth. In English, /f/ and /v/ are labiodental consonants, as in "fat" and "vat".
• Labial-velar consonants involve simultaneous closure of the lips and the back part of the vocal tract. An example of this is the English /w/ as in "wet".

Dentistry

In dentistry, labial refers to the surface of a tooth that is adjacent to (or facing) the lips. The term is used in contrast to lingual (facing the tongue), palatal (facing the palate), and buccal (facing the cheek).

Biology

In biology, labial refers to structures that are lip-like or associated with the lips. For example, in insects, the labial palps are a pair of sensory structures on the lower part of the insect's face that are used for tasting and touching.

See also

• Labialization
• Labial consonant
• Labial palps

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