Definition of "septum"

(biology) A wall separating two cavities; a partition.

1. (anatomy) Ellipsis of nasal septum.: the cartilaginous center wall of the nose separating the two nostrils.  quotations  examples

   Quotations

   • Deviated septum, a shift from the midline that commonly occurs in normal growth, is present in most adults.

     2002, Springhouse, Illustrated Manual of Nursing Practice, Lippincott Williams & Wilkins, page 1158

   • Sally got a dagger hung from her septumO'Malley cut his ears off, but wishes that he kept 'em

     2008, Neil Cicierega (lyrics and music), “Modify”, in View-Monster, performed by Lemon Demon

2. (anatomy) Either of the two walls that separate the atria or ventricles of the heart into left and right chambers.  examples

3. (botany) A partition that separates the cells of a fruit.  examples

4. (mycology) A partition that separates the cells of a (septated) fungus.

5. (zoology) One of the radial calcareous plates of a coral.

6. (zoology) One of the transverse partitions dividing the shell of a mollusk, or of a rhizopod, into several chambers.

7. (zoology) One of the transverse partitions dividing the body cavity of an annelid.

(colloquial) Ellipsis of septum ring. or septum piercing.  examples