Labial-velar nasal

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The labial–velar nasal stop is a type of consonantal sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ŋ͡m⟩.

The labial–velar nasal stop is found in West and Central Africa and eastern New Guinea.^{[citation needed]}

[edit] Features

Features of the labial–velar nasal stop:

Its manner of articulation is stop, or plosive, which means it is produced by obstructing airflow in the vocal tract. (The term plosive contrasts with nasal stops, where the blocked airflow is redirected through the nose.)
Its place of articulation is labial–velar, which means it is simultaneously articulated with the lips and with the back part of the tongue (the dorsum) against the soft palate (the velum). The dorsal closure is made and released slightly before the labial closure, but they overlap for most of their duration.
Its phonation is voiced, which means the vocal cords vibrate during the articulation.
It is a nasal consonant, which means air is allowed to escape through the nose, either exclusively (nasal stops) or in addition to through the mouth.
Because the sound is not produced with airflow over the tongue, the central–lateral dichotomy does not apply.
The airstream mechanism is pulmonic, which means it is articulated by pushing air solely with the lungs and diaphragm, as in most sounds.

Language		Word	IPA	Meaning	Notes
Vietnamese^[1]		đúng	[ɗuŋ͡m]	'correct'	Allophone of /ŋ/ after /u/ and /w/. See Vietnamese phonology

Thompson, Laurence (1959), "Saigon phonemics", Language 35 (3): 454–476, doi:10.2307/411232, JSTOR 411232