̷ ̷ˌ ̷ ̷ ̷ ̷ˈglä]səs, -lȯ]- noun
( plural genioglos·si ]ˌsī\)
Etymology: New Latin, from genio- + -glossus (from Greek glōssa tongue) — more at gloss
: either of a pair of fan-shaped muscles arising from the superior mental spine and inserting on the hyoid bone and into the tongue that serve to advance and retract and also to depress the tongue