- The act of giving premature birth; particularly, the
expulsion of the human fetus prematurely, or before it is capable of
sustaining life; miscarriage. - The immature product of an untimely birth. - Arrest of development of any organ, so that it remains an
imperfect formation or is absorbed. - Any fruit or produce that does not come to maturity, or
anything which in its progress, before it is matured or perfect; a
complete failure; as, his attempt proved an abortion.