| semicircular | 1. Having the form of half of a circle. 2. <anatomy> Semicircular canals, certain canals of the inner ear. Source: Websters Dictionary (01 Mar 1998) |
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| semicircular canal | <anatomy> Three membranous semicircular tubes contained in the bony labyrinth of the inner ear. They are concerned with equilibrium and the interpretation of the bodys position in space. (27 Sep 1997) |