pyloric caecum
nounDefinition of pyloric caecum
1
: one of the tubular pouches opening into the alimentary canal in the pyloric region of most fishes
2
: one of the tubular pouches opening into the ventriculus of an insect
3
: one of the paired tubes in each ray of a starfish that have lateral glandular diverticula, that constitute the liver, and that communicate in pairs by a common duct with the pyloric sac