phonetics Phonetics is a branch of linguistics that studies how humans produce and perceive sounds, or in the case of sign languages, the equivalent aspects of sign. Linguists who specialize in studying the physical properties of speech are phoneticians. ...

, a bilabial consonant is a

labial consonant Labial consonants are consonants in which one or both lips are the active articulator. The two common labial articulations are bilabials, articulated using both lips, and labiodentals, articulated with the lower lip against the upper teeth, bot ...

articulated An articulated vehicle is a vehicle which has a permanent or semi-permanent pivot joint in its construction, allowing it to turn more sharply. There are many kinds, from heavy equipment to buses, trams and trains. Steam locomotives were sometim ...

with both

lip The lips are the visible body part at the mouth of many animals, including humans. Lips are soft, movable, and serve as the opening for food intake and in the articulation of sound and speech. Human lips are a tactile sensory organ, and can be ...

Frequency

Bilabial consonants are very common across languages. Only around 0.7% of the world's languages lack bilabial consonants altogether, including

Tlingit The Tlingit ( or ; also spelled Tlinkit) are indigenous peoples of the Pacific Northwest Coast of North America. Their language is the Tlingit language (natively , pronounced ),

Chipewyan The Chipewyan ( , also called ''Denésoliné'' or ''Dënesųłı̨né'' or ''Dënë Sųłınë́'', meaning "the original/real people") are a Dene Indigenous Canadian people of the Athabaskan language family, whose ancestors are identified ...

, Oneida, and Wichita.

Varieties

The bilabial consonants identified by the

International Phonetic Alphabet The International Phonetic Alphabet (IPA) is an alphabetic system of phonetic notation based primarily on the Latin script. It was devised by the International Phonetic Association in the late 19th century as a standardized representation ...

(IPA) are: Owere

Igbo Igbo may refer to: * Igbo people, an ethnic group of Nigeria * Igbo language, their language * anything related to Igboland, a cultural region in Nigeria See also * Ibo (disambiguation) * Igbo mythology * Igbo music * Igbo art * * Igbo-Ukwu, a ...

has a six-way contrast among bilabial stops: .

Other varieties

The extensions to the IPA also define a () for smacking the lips together. A lip-smack in the non-percussive sense of the lips noisily parting would be .Heselwood (2013: 121) The IPA chart shades out ''bilabial lateral consonants'', which is sometimes read as indicating that such sounds are not possible. The fricatives and are often lateral, but since no language makes a distinction for centrality, the allophony is not noticeable.

References

Citations

Sources

; General references * * McDorman, Richard E. (1999). ''Labial Instability in Sound Change: Explanations for the Loss of /p/'l. H'. Chicago: Organizational Knowledge Press. . Place of articulation {{phonetics-stub