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Glottis \Glot"tis\, n. [NL., fr. Gr. ?, ?, from ?, ?, the tongue. See {Gloss} an explanatory remark.] (Anat.) The opening from the pharynx into the larynx or into the trachea. See {Larynx}.
glottis n : the vocal apparatus of the larynx; the true vocal folds and the space between them where the voice tone is generated [also: {glottides} (pl)]