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Ejective consonants are a class of consonants which may contrast with aspirated or unaspirated consonants in a language.
Ejectives are voiceless consonants which are pronounced with simultaneous glottal closure. They are often described as sounding like "spat" consonants, but ejectivity is often quite weak; in some contexts, and depending upon the language they appear in, they may even sound like unaspirated consonants.
Technically speaking, ejectives are glottalic egressive sounds.
The vast majority of ejective consonants noted in the world's languages are plosives or affricates. However, a very few languages utilise ejective fricatives as well; Ubykh (Northwest Caucasian) uses an ejective lateral fricative, the Upper Necaxa dialect of the Totonac language uses an ejective labiodental fricative, and Kabardian uses both of these in addition to ejective alveolopalatal and postalveolar fricatives. Tlingit uses ejective alveolar, lateral, velar, and uvular fricatives, and may be the only language to use the latter.
A glottalicconsonant is a consonant produced with some important contribution (a movement, a closure) of the glottis (the opening that leads from the nose and mouth cavities into the larynx and the lungs).
Glottalic sounds may involve motion of the larynx upward or downward, producing an egressive or ingressive glottalic airstream mechanism respectively.
Rather, glottalization implies that a normal pulmonic airstream is interrupted by closure of the glottis.
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