Multiple pregnancy resulting from Feilization of two ova discharged from ovary at different periods of ovulation is best termed as:

Feilization of two ova discharged from ovary at different periods of ovulation is termed as Superfoetation. Superfoetation means the feilization of an ovum from a subsequent ovulation in a woman who is already pregnant. Superfecundation and Superfoetation: Superfecundation is feilization of second ova within the same menstrual cycle when one ovum has already being feilized. Superfetation is feilization and subsequent development of an embryo during the course of an established pregnancy. Superfecundation Superfoetation Superfecundation means feilization of two ova discharged from the ovary at the same period of ovulation (Same menstrual cycle) by spermatozoa introduced during two different acts of coitus committed at sho intervals Superfoetation means Feilization of two ova discharged from ovary at different periods of ovulation. It may also be defined as the felization of an ovum from a subsequent ovulation in a woman who is already pregnant Both feilized ova develop as twins and go to full term at about the same period Both feilized ova may develop as twins but typically one fetus always remains more developed than the other, and may be born either at the same time showing different maturation or may born at different periods. Ref: APC Essentials of Forensic Medicine