Embryo Implantation, Delayed

**Definition:** Delay in the attachment and implantation of BLASTOCYST to the uterine ENDOMETRIUM. The blastocyst remains unattached beyond the normal duration thus delaying embryonic development.

**Tree numbers:** - G08.686.784.170.104.500.100

**Synonyms:** - Nidation, Delayed - Implantation, Ovum, Delayed - Ovum Implantation, Delayed - Blastocyst Implantation, Delayed - Delayed Embryo Implantation