Produced by abortion; born prematurely; as, an abortive child. Made from the skin of a still-born animal; as, abortive vellum. Rendering fruitless or ineffectual. Coming to naught; failing in its effect; miscarrying; fruitless; unsuccessful; as, an abortive attempt.
- (Biology) Imperfectly formed or developed; rudimentary; sterile; as, an abortive organ, stamen, ovule, etc.
- (Medical) (a) Causing abortion; as, abortive medicines. (b) Cutting short; as, abortive treatment of typhoid fever. That which is born or brought forth prematurely; an abortion. A fruitless effort or issue. A medicine to which is attributed the property of causing abortion.