1. (embryology) a fluid-filled cavity that develops in the mesoderm of embryos, giving rise to the pleural, pericardial, and peritoneal cavities in humans
   "The development of the celom is a key event in embryogenesis";
   - coelom, celoma [US, non-standard]
    
2. (zoology) the main body cavity between the digestive tract and body wall in most animals
   "The earthworm's celom contains fluid that acts as a hydrostatic skeleton";
   - coelom

Derived forms: celoms

Type of: bodily cavity, cavity, cavum

Encyclopedia: Celom