dissepiment
/dɪˈsɛpəmənt/
noun
- A partition or wall that divides a cavity or structure, especially in biology (e.g., in a fruit or an animal organ).
- In the coral's skeleton, each dissepiment helps support the growing structure.
- The orange's segments are separated by thin dissepiments called septa.
- The biologist carefully examined the dissepiment between the chambers of the mollusk shell.