a follicle that has undergone luteinization without prior rupture; once thought to cause infertility but now believed to occur equally often in fertile and infertile women.
lu·te·i·nized un·rup·tured fol·li·cle
(lū'tē-in-īzd ŭn-rŭp'chŭrd fol'i-kĕl) A follicle that has undergone luteinization without earlier rupture; previously thought to cause infertility but now believed to occur equally often in fertile and infertile women.