In phonetics, velaric ingressive is an airstream mechanism where a sound is produced by a closure of the velum (or soft palate) and other place of articulation in the front of the oral cavity (such as the alveolar ridge or the lips), and then sucking air in while simultaneously releasing both closures.
Velaric ingressive sounds are more commonly known as clicks.
Velaricingressives are found in very few languages, notably the Khoisan languages of Africa and some nearby languages.
Velaric pressure initiation is performed by reversing the sequence of action used to produce velaric suction initiation: the base of the tongue closes low in the throat and moves up to build up pressure.
Since the airspace for velaric consonants is so small, the potential pressure difference is very limited, so it is not considered generally possible to produce velaric fricatives, approximants, or vocoids—velaric laterals are actually stops with a lateral release.
Glottalic consonants may be either ingressive (implosive consonants) or egressive (ejective consonants).
There are also velaricingressive consonants, commonly known as clicks.
The two other theoretically possible combinations, pulmonic ingressive and velaric egressive, however, are only known from the apparently constructed ritual language Damin.
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