Nasal palatal click

The palatal nasal click is a click consonant found primarily among the languages of southern Africa. The symbol in the International Phonetic Alphabet for a nasal palatal click with a velar rear articulation is ⟨ŋ͡ǂ⟩ or ⟨ŋ͜ǂ⟩, commonly abbreviated to ⟨ŋǂ⟩, ⟨ᵑǂ⟩ or ⟨ǂ̃⟩. Linguists who prefer the old IPA letters use the analogous Beach convention of ⟨ŋ͡𝼋⟩ or ⟨ŋ͜𝼋⟩, abbreviated ⟨ŋ𝼋⟩, ⟨ᵑ𝼋⟩ or ⟨𝼋̃⟩. For a click with a uvular rear articulation, the equivalents are ⟨ɴ͡ǂ, ɴ͜ǂ, ɴǂ, ᶰǂ⟩ and ⟨ɴ͡𝼋, ɴ͜𝼋, ɴ𝼋, ᶰ𝼋⟩. Sometimes the accompanying letter comes after the click letter, e.g. ⟨ǂŋ⟩ or ⟨ǂᵑ⟩; this may be a simple orthographic choice, or may imply a difference in the relative timing of the releases.

Features
Features of the palatal nasal click:

Occurrence
Palatal nasal clicks are only found in the various Khoisan languages families of southern Africa and in the neighboring Yeyi language.

Glottalized palatal nasal click
All Khoisan languages, and a few Bantu languages, have glottalized nasal clicks. These are formed by closing the glottis so that the click is pronounced in silence; however, any preceding vowel will be nasalized.