embryonic disk

noun

Definition of embryonic disk

2 :the part of the inner cell mass of a blastocyst from which the embryo of a placental mammal develops called also embryonic shield

First Known Use of embryonic disk

circa 1938


Medical Dictionary

embryonic disk

noun
variants: or embryonic disc

medical Definition of embryonic disk

2 :the part of the inner cell mass of a blastocyst from which the embryo of a placental mammal develops called also embryonic shield

Learn More about embryonic disk


Seen and Heard

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

Love words? Need even more definitions?

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

WORD OF THE DAY

of yeast or being unsettled or frivolous

Get Word of the Day daily email!

Test Your Vocabulary

Merriam-Webster's New Words Quiz—Fall 2017 Edition!

  • young-plant-shoots
  • Which of the following is a new sense of the word bunny?
Spell It

Can you spell these 10 commonly misspelled words?

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!