septum
/ˈsɛp.təm/ noun C1- Either of the two walls that separate the atria or ventricles of the heart into left and right chambers.
- 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.
- One of the walls dividing two holes in a parallel-hole collimator
Plural septa
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