the yellow and principal substance of an egg, as distinguished from the white.
Embryology. the part of the contents of the egg of an animal that enters directly into the formation of the embryo, together with any material that nourishes the embryo during its formation.
the essential part; the inner core.
a natural grease exuded from the skin of sheep.
These Alcoholic Drinks Are Hiding Behind Regular WordsRead more in this article about some frequently asked questions and fun facts related to our definitions.
What The Nog: What’s Eggnog?What’s in eggnog? Frothy, creamy eggnog is a festive favorite in England, Canada, and America. This winter drink consists of milk, cream, sugar, whipped egg whites, and egg yolks. There are many versions of the drink, using alcohols like rum, brandy, whiskey, and bourbon. And, it often is flavored with everything from molasses to cinnamon to nutmeg to dried pumpkin. Now, there’s even soynog or nutnog, a version of …
- yolk membrane,
- yolk sac,
- yolk stalk,
- yolk-sac tumor,
Origin of yolk
before 1000; Middle English yolke, yelke, Old English geoloca, derivative of geolu yellow
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
the substance in an animal ovum consisting of protein and fat that nourishes the developing embryoRelated adjective: vitelline
a greasy substance secreted by the skin of a sheep and present in the fleece
Word Origin for yolk
Old English geoloca, from geolu yellow
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
Old English geolca, geoloca "yolk," literally "the yellow part," from geolu "yellow" (see yellow). Formerly also spelled yelk.
Online Etymology Dictionary, © 2010 Douglas Harper
The portion of the egg of an animal that consists of protein and fat from which the early embryo gets its main nourishment and of protoplasmic substances from which the embryo develops.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
The yellow internal part of the egg of a bird or reptile. The yolk is surrounded by the albumen and supplies food to the developing young.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.