Eutheria
noun pluralTo save this word, you'll need to log in.
Eu·the·ria | \ yu̇-ˈthir-ē-ə 
\
\Medical Definition of Eutheria
: a major division of mammals characterized by the attachment of the developing fetus to the maternal uterus by a placenta and including all mammals living at the present time except the marsupials
Other Words from Eutheria
eutherian \ -ē-ən \ adjective or noun
\ adjective or nounComments on Eutheria
What made you want to look up Eutheria? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Pass the Little Ribbons: A Pasta Word Quiz
- Match the pasta to its meaning in English: Rotelle
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
- Pass the Little Ribbons: A Pasta Word Quiz
Match the pasta with its meaning in Italian.
Take the quiz - Confusing Words—A Quiz
Test your knowledge of these commonly confused words!
Take the quiz - Spell It
Can you spell these 10 commonly misspelled words?
Take the quiz - Syn City
Build a city of skyscrapers—one synonym at a time.
Play the game
Share Eutheria
Resources for Eutheria