Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

yolk nucleus

noun

Definition of yolk nucleus 

1 : a formed body possibly associated with yolk formation present in the cytoplasm of many developing oocytes

2 : a nucleus in yolk : vitellophag

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Learn More about yolk nucleus

Share yolk nucleus

Resources for yolk nucleus

Cite Time Traveler Time Traveler! Explore the year a word first appeared

Dictionary Entries near yolk nucleus

yolk duct

yolk fry

yolk gland

yolk nucleus

yolk plate

yolk sac

yolk-sac placenta

Statistics for yolk nucleus

Look-up Popularity

Comments on yolk nucleus

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

Show Comments  Hide Comments 

WORD OF THE DAY

viva voce

by word of mouth

Get Word of the Day daily email!

Test Your Vocabulary

Name that Food Quiz

  • alt-573b465788319
  • Name these cookies!
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!

Words at Play

Ask the Editors

Word Games