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Capable of preventing gestation, either by preventing implantation or by causing the uterine lining to shed after implantation.
A contragestive drug or agent.

con′tra·ges·ta′tion (-jĕ-stā′shən) n.


(ˌkɒntrəˈdʒɛstɪv) med
able to prevent gestation
a contragestive drug
References in periodicals archive ?
Haspels, "Interception IV: Failure of Mifepristone (RU 486) as a Monthly Contragestive, 'Lunarette'," Contraception, 35:433-438, 1987; T.
Finally, an important question that Roe-Casey leaves unresolved is whether Roussel Uclaf, the French company holding the patent to the contragestive drug RU 486, will find that enough of a consensus about the acceptability of abortion now exists in the United States to satisfy its self-imposed conditions for release of the drug for premarketing testing.
Casey's resuscitation of Roe thus prevents state erosion of the right to avoid procreation by postcoital and contragestive methods of birth control.