the portion of the embryonic body cavity from which the abdominal, pericardial, and pleural cavities are formed.
splanchnocoele/splanch·no·coele/ (splangk´no-sēl) that portion of the coelom from which the visceral cavities are formed.
Etymology: Gk, splanchna, viscera, koilos, hollow
a part of the embryonic body cavity, or coelom, that gives rise to the abdominal, pericardial, and pleural cavities. Also called pleuroperitoneal cavity.