• synonyms


[vi-tel-uh s, vahy-]
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noun, plural vi·tel·lus·es.
  1. the yolk of an egg.
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Origin of vitellus

Borrowed into English from Latin around 1720–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for vitellus


Examples from the Web for vitellus

Historical Examples of vitellus

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

    What a Young Husband Ought to Know

    Sylvanus Stall

  • This vitellus or yolk undergoes a series of segmentation or dividings which are known as spontaneous segmentation.

  • Vitellus abdicated the Roman empire, which "he had received against his will."

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

  • It has only been met with in the vitellus of some of the medium sized ova of a young female.

British Dictionary definitions for vitellus


noun plural -luses or -li (-laɪ)
  1. zoology rare the yolk of an egg
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Word Origin for vitellus

C18: from Latin, literally: little calf, later: yolk of an egg, from vitulus calf
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

vitellus in Medicine


(vĭ-tĕləs, vī-)
n. pl. vi•tel•lus•es
  1. The yolk of an egg.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.