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n. pl. ge·ni·o·glos·si (-ī′)
Either of a pair of muscles that connect the jaw and tongue and that depress and protrude the tongue.

[New Latin genioglōssus : Greek geneion, chin; see genial2 + Greek glōssa, tongue.]
References in periodicals archive ?
Genioglossi muscle activity in reponse to changes in anterior/ neutral head posture.