mestranol

noun Pharmacology.

1. an estrogen, C21H26O2, used in oral contraceptives in combination with a progestin.

noun

1. a synthetic oestrogen used in combination with progestogens as an oral contraceptive. Formula: C 21 H 26 O 2

n.

1. A synthetic estrogen used in combination with a progestin in oral contraceptive preparations.