fetus
/ˈfitəs/
noun
- An unborn or unhatched offspring of a mammal, especially a human, after the main organs and body parts have developed (usually after the eighth week of pregnancy in humans).
- During the second trimester, the fetus begins to move and kick.
- The doctor used an ultrasound to check the health of the fetus.
- A healthy diet is important for the development of the fetus.