What does yolk mean?

Definitions for yolk
yoʊk, yoʊlkyolk

This dictionary definitions page includes all the possible meanings, example usage and translations of the word yolk.

Princeton's WordNet

  1. egg yolk, yolknoun

    the yellow spherical part of an egg that is surrounded by the albumen

  2. yolk, vitellusnoun

    nutritive material of an ovum stored for the nutrition of an embryo (especially the yellow mass of a bird or reptile egg)


  1. yolknoun

    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.

  2. Etymology: From geolca, from geolu.

Samuel Johnson's Dictionary

  1. Yolknoun

    The yellow part of an egg.

    Nature hath provided a large yolk in every egg, a great part whereof remaineth after the chicken is hatched; and, by a channel made on purpose, serves instead of milk to nourish the chick for a considerable time. John Ray, on the Creation.


  1. Yolk

    Among animals which produce eggs, the yolk (; also known as the vitellus) is the nutrient-bearing portion of the egg whose primary function is to supply food for the development of the embryo. Some types of egg contain no yolk, for example because they are laid in situations where the food supply is sufficient (such as in the body of the host of a parasitoid) or because the embryo develops in the parent's body, which supplies the food, usually through a placenta. Reproductive systems in which the mother's body supplies the embryo directly are said to be matrotrophic; those in which the embryo is supplied by yolk are said to be lecithotrophic. In many species, such as all birds, and most reptiles and insects, the yolk takes the form of a special storage organ constructed in the reproductive tract of the mother. In many other animals, especially very small species such as some fish and invertebrates, the yolk material is not in a special organ, but inside the egg cell. As stored food, yolks are often rich in vitamins, minerals, lipids and proteins. The proteins function partly as food in their own right, and partly in regulating the storage and supply of the other nutrients. For example, in some species the amount of yolk in an egg cell affects the developmental processes that follow fertilization. The yolk is not living cell material like protoplasm, but largely passive material, that is to say deutoplasm. The food material and associated control structures are supplied during oogenesis. Some of the material is stored more or less in the form in which the maternal body supplied it, partly as processed by dedicated non-germ tissues in the egg, while part of the biosynthetic processing into its final form happens in the oocyte itself.Apart from animals, other organisms, like algae, especially in the oogamous, can also accumulate resources in their female gametes. In gymnosperms, the remains of the female gametophyte serve also as food supply, and in flowering plants, the endosperm.

Webster Dictionary

  1. Yolknoun

    the yellow part of an egg; the vitellus

  2. Yolknoun

    an oily secretion which naturally covers the wool of sheep

  3. Etymology: [OE. yolke, yelke, olke, elke, AS. geoloca, geoleca, fr. geolu yellow. See Yellow.]

Chambers 20th Century Dictionary

  1. Yolk

    yōk, Yelk, yelk, n. the yellow part of an egg: the vitellus of a seed: wool-oil.—adjs. Yolked, having a yolk; Yolk′y, like yolk. [A.S. geoloca, geolecageolo, yellow.]

The Foolish Dictionary, by Gideon Wurdz

  1. YOLK

    The legacy of the hen and the burden of its lay. YOKE The inheritance of the hen-pecked and the burden of the married.

Suggested Resources

  1. Yolk

    Yoke vs. Yolk -- In this Grammar.com article you will learn the differences between the words Yoke and Yolk.


  1. Yolk

    the nutritive matter of an egg as distinguished from the living, formative material; = deutoplasm.

Matched Categories

How to pronounce yolk?

How to say yolk in sign language?


  1. Chaldean Numerology

    The numerical value of yolk in Chaldean Numerology is: 4

  2. Pythagorean Numerology

    The numerical value of yolk in Pythagorean Numerology is: 9

Examples of yolk in a Sentence

  1. Homa Dashtaki:

    It’s like trying to explain egg whites to people who have never seen a yolk.

  2. Zhang Heng:

    The sky is the egg shell, the earth is the yolk of the egg.

  3. Lisa Steele:

    I almost feel like the egg yolk and the egg white are two separate foods.

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"yolk." Definitions.net. STANDS4 LLC, 2023. Web. 1 Jun 2023. <https://www.definitions.net/definition/yolk>.

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