Category:Septum

Sep"tum, n.; pl. Septa. Etym: [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.)

Defn: a partition that separates the cells of a fruit.

3. (zoöl.) (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.