corpus luteum
- Anat. a mass of yellow tissue formed in the ovary by a ruptured graafian follicle that has discharged its ovum: if the ovum is fertilized, this tissue secretes the hormone progesterone, needed to maintain pregnancy
- a preparation containing this hormone, used in ovarian therapy; progesterone
See corpus luteum in American Heritage Dictionary 4
(lo͞oˈtē-əm)
noun pl. corpora lu·te·a (lo͞oˈtē-ə) A yellow, progesterone-secreting mass of cells that forms from an ovarian follicle after the release of a mature egg.
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