abortionist

Concise Oxford English Dictionary © 2008 Oxford University Press:
abortion/əˈbɔːʃn/

▶noun

• 1 the deliberate termination of a human pregnancy.

  ■ the natural expulsion of a fetus from the womb before it is able to survive independently.

• 2 Biology the arrest of the development of an organ, especially a seed or fruit.

• 3 informal, derogatory something imperfectly planned or made.

– derivatives
abortionist noun (chiefly derogatory).