The voiceless bilabial plosive or stop is a type of

consonant In articulatory phonetics, a consonant is a speech sound that is articulated with complete or partial closure of the vocal tract. Examples are and pronounced with the lips; and pronounced with the front of the tongue; and pronounced wit ...

al sound used in most spoken

language Language is a structured system of communication. The structure of a language is its grammar and the free components are its vocabulary. Languages are the primary means by which humans communicate, and may be conveyed through a variety of met ...

s. The symbol in the

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

that represents this sound is , and the equivalent

X-SAMPA The Extended Speech Assessment Methods Phonetic Alphabet (X-SAMPA) is a variant of SAMPA developed in 1995 by John C. Wells, professor of phonetics at University College London. It is designed to unify the individual language SAMPA alphabets, a ...

symbol is p.

Features

Features of the voiceless bilabial stop:

Varieties

Occurrence

The stop is missing from about 10% of languages that have a . (See

voiced velar stop The voiced velar plosive or stop is a type of consonantal sound used in many spoken languages. Some languages have the voiced pre-velar plosive, which is articulated slightly more front compared with the place of articulation of the prototyp ...

for another such gap.) This is an

areal feature In geolinguistics, areal features are elements shared by languages or dialects in a geographic area, particularly when such features are not descended from a proto-language, or, common ancestor language. That is, an areal feature is contrasted to ...

of the circum-Saharan zone (Africa north of the equator plus the

Arabian peninsula The Arabian Peninsula, (; ar, شِبْهُ الْجَزِيرَةِ الْعَرَبِيَّة, , "Arabian Peninsula" or , , "Island of the Arabs") or Arabia, is a peninsula of Western Asia, situated northeast of Africa on the Arabian Plate ...

). It is not known how old this areal feature is, and whether it might be a recent phenomenon due to Arabic as a prestige language (Arabic shifted to but the timing of this change is not known), or whether Arabic was itself affected by a more ancient areal pattern. It is found in other areas as well; for example, in Europe,

Proto-Celtic Proto-Celtic, or Common Celtic, is the ancestral proto-language of all known Celtic languages, and a descendant of Proto-Indo-European. It is not attested in writing but has been partly Linguistic reconstruction, reconstructed through the compar ...

and Old Basque are both reconstructed as having but no . Nonetheless, the sound is very common cross-linguistically. Most languages have at least a plain , and some distinguish more than one variety. Many

Indo-Aryan languages The Indo-Aryan languages (or sometimes Indic languages) are a branch of the Indo-Iranian languages in the Indo-European languages, Indo-European language family. As of the early 21st century, they have more than 800 million speakers, primarily ...

, such as Hindustani, have a two-way contrast between the aspirated and the plain (also transcribed as in

extensions to the IPA The Extensions to the International Phonetic Alphabet for Disordered Speech, commonly abbreviated extIPA , are a set of letters and diacritics devised by the International Clinical Phonetics and Linguistics Association to augment the Internati ...

Examples

Notes

References

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External links

* {{DEFAULTSORT:Voiceless Bilabial stop Bilabial stops Voiceless stops Pulmonic consonants Labial–coronal consonants