Used attributively in biomedical contexts (e.g., "blastocyst transfer").
Definitions
blastocystnoun
A structure formed in the early development of mammals, consisting of a cellular mass that forms the embryo and an outer layer that forms the placenta.
The blastocyst implants into the uterine wall around five to six days after fertilization.
blastocystadjective
Relating to, derived from, or characteristic of a blastocyst.
Blastocyst culture techniques have improved implantation rates.