Dictionary Meaning and Definition on 'Ingressive'
Wikipedia Meaning and Definition on 'Ingressive'
In human speech, ingressive sounds are those in which the airstream is inward through the mouth or nose. The three types of ingressive sounds are lingual ingressive, glottalic ingressive, and pulmonic ingressive (inhaled). The opposite of an ingressive sound is an egressive sound.
Lingual ingressive, or velaric ingressive, describes an airstream mechanism whereby a sound is produced by closing the vocal tract at two places of articulation in the mouth, rarifying the air in the enclosed space by lowering the tongue, and then releasing both closures. The sounds made this way are called clicks.
This term is generally applied to the implosive consonants, which actually use a mixed glottalic ingressive–pulmonic egressive airstream. True pulmonic ingressives, called voiceless implosives or reverse ejectives, are quite rare. (See implosive consonant.)[See more about Ingressive at Dictionary 3.0 Encyclopedia]