blastodermic vesicle

Meaning

A fluid-filled, hollow sphere formed during the early cleavage stages of embryonic development in many animals, specifically representing the blastula stage in mammals.

Examples

• The blastodermic vesicle expands rapidly as the embryo prepares for implantation in the uterine wall.
• Microscopic examination of the specimen revealed the delicate structure of the blastodermic vesicle.