Foetus
Foetus
Foetus (pronounced: /ˈfiːtəs/), also spelled as fetus, is a term used in biology and medicine to refer to the developmental stage of a mammal or other viviparous vertebrate after the embryonic stage and before birth.
Etymology
The term "foetus" is derived from the Latin word fetus, meaning "offspring", "bringing forth", "hatching of young".
Definition
In human development, a foetus or fetus is the unborn offspring from the end of the 8th week after conception (when the major structures have formed) until birth. Up to the eighth week, the developing offspring is called an embryo.
Related Terms
- Embryo: The stage of development before the foetus, from fertilization to the end of the 8th week of gestation.
- Gestation: The period of time between conception and birth during which the foetus develops in the uterus.
- Pregnancy: The state of carrying a developing embryo or foetus within the female body.
- Birth: The process of childbirth, where the foetus is expelled from the uterus to live independently.
- Neonate: A newborn child, or an infant in the first 28 days after birth.
See Also
External links
- Medical encyclopedia article on Foetus
- Wikipedia's article - Foetus
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