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Sep"tum (?), n.; pl. Septa (#). [L. septum, saeptum, an inclosure, hedge, fence, fr. sepire, saepire, to hedge in, inclose.]

1.

A wall separating two cavities; a partition; as, the nasal septum.

2. Bot.

A partition that separates the cells of a fruit.

3. Zool. (a)

One of the radial calcareous plates of a coral.

(b)

One of the transverse partitions dividing the shell of a mollusk, or of a rhizopod, into several chambers. See Illust. under Nautilus.

(c)

One of the transverse partitions dividing the body cavity of an annelid.

 

© Webster 1913.