You searched for: “fetuses
fetus (s), fetuses (pl); foetus
1. The unborn offspring from the end of the eighth week after conception (when the major structures have formed) until birth.

Up until the eighth week, the developing offspring is called an embryo.

2. The unborn young of a viviparous animal following the embryonic period in the later stages of development when the body structures are in their recognizable forms for their species.

The latter stages of the developing young of an animal within the uterus or within an egg.

3. In humans, the baby in utero after the product of conception from the end of the eighth week to the moment of birth.

Before that time, it is called an embryo.

This entry is located in the following unit: feto-, fet-, feti-, foeto-, foet- + (page 2)