- A pill containing a drug, particularly an estrogen or estrogen alternative such as diethylstilbestrol, that stops implantation of a fertilized ovum and it is for that reason effective as a contraceptive after sexual activity.
- a contraceptive by means of a pill taken the early morning after intercourse
- a large dosage of estrogen taken by mouth within 24 to 72 hours after sex; prevents implantation of a fertilized ovum therefore will act as a contraceptive; widely used after rape or incest
Hypernym for "morning-after pill"
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