A
septum, in general, is a wall separating two cavities. The word is
Latin and literally means "something that encloses".
The term is most commonly used in
anatomy and
biology:
- the septum nasi, or simply septum, is the cartilage wall separating the two nostrils
- the interventricular septum is the wall separating the two halves of the heart
- the septum is also a dividing structure in the brain