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- Word comparison: frenum vs. frenulum
frenum vs. frenulum
noun
Anatomy, Zoology.
plural
frenaa fold of membrane that checks or restrains the motion of a part, such as the fold on the underside of the tongue.
noun
plural
frenulaAnatomy, Zoology., a small frenum.
Entomology., a strong spine or group of bristles on the hindwing of many butterflies and moths, projecting beneath the forewing and serving to hold the two wings together in flight.