Voiced bilabial nasal
Consonantal sound represented by ⟨m⟩ in IPA
From Wikipedia, the free encyclopedia
A voiced bilabial nasal is a type of consonantal sound which has been observed to occur in about 96% of spoken languages.[1] The symbol in the International Phonetic Alphabet that represents this sound is ⟨m⟩. The bilabial nasal occurs in English, and it is the sound represented by "m" in map and rum. Very few languages (e.g. Wyandot) are known to lack this sound. A small number of languages have been observed to lack independent nasal phonemes altogether, such as Quileute, Makah, and Central Rotokas.[2]
| Voiced bilabial nasal | |||
|---|---|---|---|
| m | |||
| IPA number | 114 | ||
| Audio sample | |||
| Encoding | |||
| Entity (decimal) | m | ||
| Unicode (hex) | U+006D | ||
| X-SAMPA | m | ||
| Braille | |||
| |||
Features

Features of a voiced bilabial nasal:
- Its manner of articulation is occlusive, which means it is produced by obstructing airflow in the vocal tract. Because the consonant is also nasal, the blocked airflow is redirected through the nose.
- Its place of articulation is bilabial, which means it is articulated with both lips.
- Its phonation is voiced, which means the vocal cords vibrate during the articulation.
- It is a nasal consonant, which means air is exclusively allowed to escape through the nose for nasal stops; otherwise, in addition to through the mouth.
- Because the sound is not produced with airflow over the tongue, the median–lateral dichotomy does not apply.
- Its airstream mechanism is pulmonic, which means it is articulated by pushing air only with the intercostal muscles and abdominal muscles, as in most sounds.
Occurrence
Palatalized
| Language | Word | IPA | Meaning | Notes | |
|---|---|---|---|---|---|
| Bulgarian[24] | мя́сто/mästo | [mʲa̟sto] | 'place' | Contrasts with /m/. See Bulgarian phonology. | |
| Irish | mé | [mʲeː] | 'I' | Contrasts with /mˠ/. See Irish phonology. | |
| Kildin Saami[25] | ме̄рр/mʹērr | [mʲerː] | 'sea' | Kildin Saami contrasts varieties of bilabial nasals in voicedness, length and palatalization.[25] | |
| Latgalian[26] | miļti | [mʲilʲtʲi][27] | 'flour' | Contrasts with /m/.[26] See Latgalian phonology. | |
| Lithuanian[28] | miglà | [mʲɪɡˈɫa] | 'mist' | Contrasts with /m/. See Lithuanian phonology | |
| Marshallese[29] | emān | [ɛmʲænʲ] | 'four' | Contrasts with /mˠ/.[29] | |
| Nenets | Tundra Nenets[30] | мяˮ/ḿaq | [mʲɑ][31] | 'tent' | Contrasts with /m/.[30] |
| Forest Nenets[30] | миԓи | 'lived' | |||
| Polish | mięso | [mʲɛ̃w̃sɔ] | 'meat' | Contrasts with /m/. See Polish phonology. | |
| Russian | медь/měď | ⓘ | 'copper' | Contrasts with /m/. See Russian phonology. | |
| Veps[32] | nem' | [nemʲ] | 'peninsula' | Contrasts with /m/.[32] | |
Velarized
| Language | Word | IPA | Meaning | Notes | |
|---|---|---|---|---|---|
| Gilbertese | mwe[33] | [mˠe] | 'sleep' | Contrasts with /m/ and /mː/. | |
| Irish | má | [mˠɑː] | 'if' | Contrasts with /mʲ/. See Irish phonology. | |
| Marshallese[29] | m̧winam̧ōn | [mˠinʲɑmˠʌnʲ] | 'caterpillar' | Contrasts with /mʲ/.[29] | |
