Abortive

[Lat. abortivus. See ABORT.] 1. Brought forth in an immature state; imperfectly formed or developed; rudimentary; hence, failing, or coming to naught, before it is complete; fruitless; producing nothing. “Thou selfish-marked, abortive, rooting hog.” Shak. “An abortive enterprise.” Prescott. Abortive as the first-born bloom of spring Nipped with the lagging rear of winter’s frost. Milton.

2. Pertaining to abortion; as, abortive vellum, made of the skin of an abortive calf.
3. (Med.) Procuring or causing abortion; as, abortive medicines. Parry.

1. That which is brought forth or born prematurely; an abortion. Shak.
2. (Med.) That which is thought to produce abortion. Dunglison.