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

Medical Dictionary

decidua

play
noun de·cid·ua \di-ˈsij-ə-wə\

Medical Definition of decidua

plural de·cid·uae \-ˌwē\play

  1. 1:  the part of the mucous membrane lining the uterus that in higher placental mammals undergoes special modifications in preparation for and during pregnancy and is cast off at parturition, being made up in the human of a part lining the uterus, a part enveloping the embryo, and a part participating with the chorion in the formation of the placenta—see decidua basalis, decidua capsularis, decidua parietalis

  2. 2:  the mucous membrane of the uterus cast off in the ordinary process of menstruation

  3. de·cid·u·al \-ə-wəl\play adjective




Learn More about decidua


Seen and Heard

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

WORD OF THE DAY

February 14, 2016

to hug and kiss another person

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?

16.96 pounds 196.5 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