Septa (singular: septum) are anatomical or pathological structures that subdivide an component of normal anatomy or a lesion. In Latin septum means a fence, hence its customary medical usage.
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.
- 1. William Alexander Newman Dorland. Dorland's Illustrated Medical Dictionary. (2018) ISBN: 9781416023647