Definitions

1. noun

A blastula that has undergone invagination and developed a layer of cells.

“In the embryonic development of the sea urchin, the blastozooid stage is crucial for further growth and differentiation.”

2. noun

A type of blastula that develops into a radial or bilateral symmetry, characteristic of deuterostomes.

“The formation of a blastozooid during embryonic development is a key indicator of the animal’s body plan and symmetry.”