allantochorion

noun
al·​lan·​to·​cho·​ri·​on | \ ə-ˌlan-(ˌ)tō-ˈkōr-ē-ˌän, -ˈkȯr- How to pronounce allantochorion (audio) \

Medical Definition of allantochorion

: an embryonic membrane consisting of a fused allantois and chorion

Comments on allantochorion

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

WORD OF THE DAY

a haphazard or makeshift solution

Get Word of the Day daily email!

Test Your Vocabulary

Summer 2019 Words of the Day Quiz

  • a-bowl-of-peach-sorbet-with-cut-peaches-next-to-it
  • Which is a synonym of desideratum?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!