Yolk definition

yōk
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A greasy substance found in unprocessed sheep's wool, which is refined to make lanolin.
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The definition of a yolk is the yellow part of an egg.

An example of a yolk is the part you remove to make an egg white omelet.

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The portion of the egg of egg-laying vertebrates, such as reptiles and birds, and of certain invertebrates that consists chiefly of protein and fat and serves as the primary source of nourishment for the early embryo.
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This portion of the egg of a bird, especially a chicken, which is large, yellow, and surrounded by albumen.
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(biol.) The protein and fat stored in the ovum, that serves as nourishment for the growing embryo.
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A greasy substance found in unprocessed sheep's wool, which is refined to make lanolin.
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The portion of the egg of egg-laying vertebrates, such as reptiles and birds, and of certain invertebrates that consists chiefly of protein and fat and serves as the primary source of nourishment for the early embryo.
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This portion of the egg of a bird, especially a chicken, which is large, yellow, and surrounded by albumen.
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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.
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The yellow, spherical part of an egg that is surrounded by the white albumen, and serves as nutriment for the growing young.

To make meringue, you have to separate the white from the yolk.

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The grease in a sheep's fleece.
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The yellow, principal substance of an egg, as distinguished from the albumen, or white.
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Other Word Forms

Noun

Singular:
yolk
Plural:
yolks

Origin of yolk

  • Middle English yolke from Old English geolca from geolu yellow yellow

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Old English Ä¡eolca, from Ä¡eolu (“yellow").

    From Wiktionary