n 1  :  the termination of a pregnancy after, accompanied by, resulting in, or closely followed by the death of the embryo or fetus  a  :  spontaneous expulsion of a human fetus during the first 12 weeks of gestation - compare MISCARRIAGE   b  :  induced expulsion of a human fetus  c  :  expulsion of a fetus of a domestic animal often due to infection at any time before completion of pregnancy - see CONTAGIOUS ABORTION TRICHOMONIASISb VIBRIONIC ABORTION   2  :  arrest of development of an organ so that it remains imperfect or is absorbed  3  :  the arrest of a disease in its earliest stage < of a cold>  .
 
 
 
Similar sounding terms:  ab·er·ra·tion  abra·sion 
 
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