[TA] the lower, long periosteal extension of the limbus laminae spiralis osseae that rests on the basilar lamina of the spiral organ (of Corti). SYN: labium limbi tympanicum limbi spiralis ossei [TA], labium limbi tympanicum laminae spiralis ossei, tympanic labium of limbus of spiral lamina, tympanic lip of limbus of spiral lamina.
