septum

باللغة العربية: حاجِز

1. Either of the two walls that separate the atria or ventricles of the heart into left and right chambers.
2. A partition that separates the cells of a fruit.
3. A partition that separates the cells of a (septated) fungus.
4. One of the radial calcareous plates of a coral.
5. One of the transverse partitions dividing the shell of a mollusk, or of a rhizopod, into several chambers.
6. One of the transverse partitions dividing the body cavity of an annelid.
7. One of the walls dividing two holes in a parallel-hole collimator

الجمع septa