What context can I use each word in?
Learn when and how to use these words with these examples!
foetus
Example
The foetus is fully formed by the end of the first trimester. [foetus: noun]
Example
The mother's diet during pregnancy can affect the growth of the foetus. [foetus: noun]
fetus
Example
The fetus is most vulnerable during the first trimester. [fetus: noun]
Example
The ultrasound showed that the fetus was healthy and growing properly. [fetus: noun]
Good things to know
Which word is more common?
Fetus is more common than foetus in American English, while foetus is more common in British English. However, both words are widely understood and used interchangeably.
Whatโs the difference in the tone of formality between foetus and fetus?
Foetus is considered more formal than fetus. It is often used in medical or scientific contexts, while fetus is used in everyday language.
