Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

fetus

play
noun fe·tus \ˈfē-təs\

Simple Definition of fetus

  • : a human being or animal in the later stages of development before it is born

Full Definition of fetus

  1. :  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

  1. compare embryo 1b

Origin of fetus

Middle English, from Latin, act of bearing young, offspring; akin to Latin fetus newly delivered, fruitful — more at feminine


First Known Use: 14th century

Other Embryology Terms

Rhymes with fetus


FETUS Defined for Kids

fetus

play
noun fe·tus \ˈfē-təs\

Definition of fetus

  1. :  an animal not yet born or hatched but more developed than an embryo




Medical Dictionary

fetus

noun fe·tus

Medical Definition of fetus

plural fe·tus·es or chiefly British foe·tus·es or foe·ti \ˈfēt-ˌī\play

  1. :  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



Variants of fetus

or chiefly British foe·tus \ˈfēt-əs\play

Learn More about fetus


Seen and Heard

What made you want to look up fetus? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

February 11, 2016

the holder of an office

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image33683556

How much does a batman (the Turkish unit of measurement) weigh?

196.5 pounds 16.96 pounds 100 pounds 2.2 pounds
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ