Relating to the coelom, a body cavity.

Pertaining to organisms with a true coelom.

Describing structures derived from the coelomic tissue.

**Coelomic cavity**: Fluid-filled body space in organisms.

**Coelomate organism**: Animal with a true coelom structure.

**Coelomic fluid**: Liquid found within the coelomic cavity.

**Coelomic lining**: Tissue that forms the walls of the coelum.