Medical Dictionary

yolk plug

noun

Medical Definition of YOLK PLUG

:  a mass of yolk cells found in the blastopore of the embryos of some vertebrates

Browse

May 26, 2015
sacrilegious Hear it
grossly irreverent
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears