Septum (general)

Dr Daniel J Bell et al.

Septa (singular: septum) are anatomical or pathological structures that subdivide a component of normal anatomy or a lesion.


Septa is the plural of the Latin word septum. Septae and septi are erroneous forms and are not words in English. Septation is frequently used as a synonym for septum, but this is strictly incorrect. Instead septation ideally is used to describe the dividing up of a lesion or anatomical space by a septum/septa.

History and etymology

In Latin septum means a fence, hence its customary medical usage.

Share article

Article information

rID: 63069
Section: Pathology, Anatomy
Synonyms or Alternate Spellings:
  • Septal (general)
  • Septa (general)
  • Septation (general)
  • Septated (general)
  • Septate (general)
  • Septating (general)
  • Septations (general)

Support Radiopaedia and see fewer ads

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.