General physiological term for the result of conception, encompassing the whole range of development from the egg (ovum) when first fertilized by the sperm through the complete pregnancy and birth, including the stages called zygote, embryo, and fetus.
An embryo or fetus together with all the tissues that surround it during pregnancy.
Product of conception, the fertilized egg with its enclosing membranes in the uterus.
The products of conception: the developing infant and its enclosing membrane at all stages in the womb.