Definitions

1. adjective

Relating to or denoting the phase of the menstrual cycle between ovulation and menstruation, during which the corpus luteum secretes progesterone.

“The luteal phase of her menstrual cycle was 14 days long.”

2. noun

The corpus luteum, a temporary endocrine structure that forms in the ovary after ovulation and secretes progesterone until the end of the menstrual cycle.

“The luteal body began to degenerate after menstruation.”