A wall separating two cavities; a partition
A partition that separates the cells of a fruit.
A partition that separates the cells of a (septated) fungus.
One of the radial calcareous plates of a coral.
One of the transverse partitions dividing the shell of a mollusk, or of a rhizopod, into several chambers.
One of the transverse partitions dividing the body cavity of an annelid.