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vitellus

American  
[vi-tel-uhs, vahy-] / vɪˈtɛl əs, vaɪ- /

noun

plural

vitelluses
  1. the yolk of an egg.


vitellus British  
/ vɪˈtɛləs /

noun

  1. rare zoology the yolk of an egg

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of vitellus

Borrowed into English from Latin around 1720–30

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Now, the human ovum or egg consists of a vitellus or yolk, which is covered by a similar membrane, known as the vitelline.

From What a Young Husband Ought to Know by Stall, Sylvanus

Yolk, yōk, Yelk, yelk, n. the yellow part of an egg: the vitellus of a seed: wool-oil.—adjs.

From Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements) by Various

"The ovarian eggs of all animals are identical, small cells with vitellus, germinal vesicle and germinal spot."

From Facts and Arguments for Darwin by Muller, Fritz

Vitelligenous: producing the vitellus or yolk: said of certain cells in the ovaries, believed to have that function.

From Explanation of Terms Used in Entomology by Smith, John. B.

Within the shell the animal portion of the egg is found; which consists of a viscous, colorless liquid called albumen, or the white, and a yellow globular mass called the vitellus, or yolk.

From Donahoe's Magazine, Volume XV, No. 3 Volume XV (Jan 1886-Jul 1886) by Various