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fetus
The definition of a fetus is an unborn offspring of an animal with a vertebrae or human.
(noun)A baby that has been in its mother's stomach growing for 18 weeks is an example of a fetus.
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See fetus in Webster's New World College Dictionary
noun pl. fetuses
an unborn offspring of a vertebrate animal that is still in the uterus or egg, esp. in its later stages and specif., in humans, from about the eighth week after conception until birth
Origin: ME < L fetus, foetus, a bringing forth, progeny; as adj., pregnant, fruitful: see female
See fetus in American Heritage Dictionary 4
noun pl. fe·tus·es
- The unborn young of a viviparous vertebrate having a basic structural resemblance to the adult animal.
- In humans, the unborn young from the end of the eighth week after conception to the moment of birth, as distinguished from the earlier embryo.
Origin:
Origin: Middle English
Origin: , from Latin fētus, offspring; see dhē(i)- in Indo-European roots
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