Definitions

1. noun

A fluid-filled cavity or sac that forms from the collapse of a blastocoel, a cavity in the early embryo that is formed by the blastula, a stage of embryonic development.

“The presence of a blastocele in the embryo was a significant finding in the study of embryonic development.”

2. noun

A cavity or sac in a blastula, the early stage of embryonic development.

“The blastocele is an essential feature of a blastula, marking the beginning of embryonic development.”