(FEE-tus) 
An unborn offspring that develops and grows inside the uterus (womb) of humans and other mammals. In humans, the fetal period begins at 9 weeks after fertilization of an egg by a sperm and ends at the time of birth.
(FEE-tus)
An unborn offspring that develops and grows inside the uterus (womb) of humans and other mammals. In humans, the fetal period begins at 9 weeks after fertilization of an egg by a sperm and ends at the time of birth.