septum

/ˈsɛptəm/
noun
  1. A wall of tissue or membrane that divides a space or cavity in the body, especially the wall between the nostrils.
    • Surgery can repair a damaged nasal septum.
    • A deviated septum can make it hard to breathe through one nostril.
    • The doctor examined the septum inside her nose.
  2. A dividing wall or partition in a biological structure, such as in a fruit or a coral.
    • The fungus grew a septum between its cells.
    • The septum in an orange separates the segments of fruit.
    • In some corals, a hard septum supports the soft tissue.
What does "septum" mean? | whatsthatwordmean | whatsthatwordmean