abortifacient

adj. causing the premature termination of a pregnancy, inducing abortion (of a drug)

n. drug which causes abortion, agent which causes the premature termination of a pregnancy

An abortifacient is a substance that induces abortion.
See more at Wikipedia.org...

Abortifacient /abor·ti·fa·cient/ 1. causing abortion. 2. an agent that induces abortion. a·bor·ti·fa·cient adj. Causing or inducing abortion. [more]Abortifacient - Community and Resources

Noun
1. a drug (or other chemical agent) that causes abortion
(synonym) aborticide, abortion-inducing drug
(hypernym) drug
(hyponym) abortion pill, RU 486, Mifepristone
Adjective
1. causing abortion
(similar) causative

(v.)
Producing miscarriage.
  

(n.)
A drug or an agent that causes premature delivery.