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Malleus

Origin: L, hammer. See mall a beetle.

1. (Science: anatomy) The outermost of the three small auditory bones, ossicles; the hammer. It is attached to the tympanic membrane by a long process, the handle or manubrium.

2. (Science: zoology) One of the hard lateral pieces of the mastax of rotifera. See Mastax.

3. (Science: zoology) a genus of bivalve shells; the hammer shell. The ossicle attached to the eardrum.The outermost of the three ear ossicles.