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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.

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.

1. The giving birth to an embryo or non-viable fetus. 2. The product of such premature birth. 3. The arrest of any action or process before its normal completion, as the abortion of pneumonia. A distinction is sometimes made between abortion and miscarriage, the former signifying the emptying of the uterus prior to the fourth month of pregnancy, the latter during the fourth, fifth, or sixth month; premature delivery noting the delivery of a viable fetus after the beginning of the seventh month and before full term.

Premature delivery: anything that does not reach maturity.

Premature birth; failure.

An untimely birth; failure.

Bringing forth young prematurely; miscarriage; a foetus brought forth imperfectly formed; anything that does not come to maturity, or that comes to nothing.

Premature birth; arrest of development of an organ.

The expulsion of the foetus before the seventh month of utero-gestation, or before it is viable. The causes of this accident are referable either to the mother, and particularly to the uterus; or to the foetus and its dependencies. The causes, in the mother, may be :-extreme nervous susceptibility, great debility, plethora, faulty conformation, &c.; and it is frequently induced immediately by intense mental emotion, violent exercise, &c. The causes seated in the foetus are its death, rupture of the membranes, &c. It most frequently occurs between the 8th and 12th weeks of gestation. The symptoms of abortion are :-uterine hemorrhage with or without flakes of decidua, with intermitting pain. When abortion has once taken place, it is extremely apt to recur in subsequent pregnancies about the same period. Some writers have called abortion, when it occurs prior to three months, Effluxion. The treatment must vary according to the constitution of the patient and the causes giving rise to it. In all cases, the horizontal posture and perfect quietude are indispensable.

is likewise applied to the product of an untimely birth.

Expulsion of a fetus before it is viable.

Premature arrest of a morbid or a natural process. Abortion is termed accidental or spontaneous, when due to accident; artificial or induced, when brought on purposely; criminal, when not necessary for therapeutic reasons; embryonic, when it occurs before the fourth month; fetal, when after the fourth month; habitual, when repeated in successive pregnancies; incomplete, when the placenta is retained; inevitable, when the embryo is dead or there is rupture of the ovum; missed, when the fetus is dead, but is not expelled within two weeks; ovular, when occurring within the first three weeks.

The termination of pregnancy by the expulsion of the ovum before the fetus has become viable; in a stricter sense, the expulsion of the ovum before the completion of the third month of gestation (in the human subject), as distinguished from miscarriage.

A fetus which has been expelled prematurely.

The premature cessation of any physiological or pathological process.

n. [Latin] The act of miscarrying; expulsion of an immature product of conception ; — anything which fails to come to maturity.

The act of bringing forth untimely; the produce of an untimely birth.