Origin of incus
New Latin, from Latin, anvil, from incudere
First Known Use: 1615
Medical Definition of incus
: the middle bone of the chain of three ossicles in the middle ear of a mammal resembling a premolar tooth with the body having a facet which articulates with the malleus and with the longer of the two widely separated crura having a process which articulates with the stapes—called also ambos, anvil
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