: an unborn or unhatched vertebrate especially after attaining the basic structural plan of its kind
specifically
: a developing human from usually two months after conception to birth compare embryo sense 1a
Examples of fetus in a Sentence
Recent Examples on the Web
Isla died after the healthy, viable fetus in the 22nd week of gestation had no oxygen when the placenta tore and bled as a result of the crash, according to the suit.
—
Corina Vanek, AZCentral.com, 4 July 2025
Still, Moser stresses that this work does not indicate that a fetus is conscious.
—Christian Wolf, Scientific American, 25 June 2025
My job is to present all of the imperfect but ethically permissible options, and their implications for the fetus, to the person in front of me.
—Christine Henneberg, The Atlantic, 24 June 2025
Marijuana is also extremely dangerous to the fetus in the womb, and later childhood development.
—Daniel Wine, CNN Money, 29 June 2025
See All Example Sentences for fetus
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Corina Vanek, AZCentral.com, 4 July 2025
Still, Moser stresses that this work does not indicate that a fetus is conscious.
—Christian Wolf, Scientific American, 25 June 2025
My job is to present all of the imperfect but ethically permissible options, and their implications for the fetus, to the person in front of me.
—Christine Henneberg, The Atlantic, 24 June 2025
Marijuana is also extremely dangerous to the fetus in the womb, and later childhood development.
—Daniel Wine, CNN Money, 29 June 2025
See All Example Sentences for fetus
Cite this Entry
“Fetus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fetus. Accessed 22 Jul. 2025.
Copy CitationKids Definition
fetus
noun
fe·tus
ˈfēt-əs 
plural fetuses
: a young animal while in the body of its mother or in the egg especially in the later stages of development
especially
: a developing human being in the uterus from usually two months after pregnancy occurs to birth compare embryo sense 1
Medical Definition
fetus
noun
fe·tus
variants
or chiefly British foetus
plural fetuses or chiefly British foetuses or foeti
ˈfēt-ˌī
: an unborn or unhatched vertebrate especially after attaining the basic structural plan of its kind
specifically
: a developing human from usually two months after conception to birth compare embryo
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