Glossary: pregnancy

In biology, the beginning of pregnancy, marked by fertilization of an egg by a sperm.

In medicine, a health problem with certain characteristics or symptoms.

The condition between conception (fertilization of an egg by a sperm) and birth, during which the fertilized egg develops in the uterus. In humans, pregnancy lasts about 288 days.

The small, hollow, pear-shaped organ in a woman's pelvis. This is the organ in which a fetus develops. Also called womb.