Definition of yolk

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Yolk (n.) An oily secretion which naturally covers the wool of sheep.

Lern More About Yolk

Vitelline :: Vitelline (a.) Of or pertaining to the yolk of eggs; as, the vitelline membrane, a smooth, transparent membrane surrounding the vitellus..
Vitelligenous :: Vitelligenous (a.) Producing yolk, or vitelline substance; -- applied to certain cells (also called nutritive, or yolk, cells) formed in the ovaries of many insects, and supposed to supply nutriment to the developing ova..
Centrolecithal :: Centrolecithal (a.) Having the food yolk placed at the center of the ovum, segmentation being either regular or unequal..
Colostrum :: Colostrum (n.) A mixture of turpentine and the yolk of an egg, formerly used as an emulsion..
Holoblastic :: Holoblastic (a.) Undergoing complete segmentation; composed entirely of germinal matter, the whole of the yolk undergoing fission; -- opposed to meroblastic..
Vitellogene :: Vitellogene (n.) A gland secreting the yolk of the eggs in trematodes, turbellarians, and some other helminths..
Meroblastic :: Meroblastic (a.) Consisting only in part of germinal matter; characterized by partial segmentation only; as, meroblastic ova, in which a portion of the yolk only undergoes fission; meroblastic segmentation; -- opposed to holoblastic..
Glyconin :: Glyconin (n.) An emulsion of glycerin and the yolk of eggs, used as an ointment, as a vehicle for medicines, etc..
Ectolecithal :: Ectolecithal (a.) Having the food yolk, at the commencement of segmentation, in a peripheral position, and the cleavage process confined to the center of the egg; as, ectolecithal ova..
Ovoplasma :: Ovoplasma (n.) Yolk; egg yolk.
Yelk :: Yelk (n.) Same as Yolk.
Metamorphosis :: Metamorphosis (n.) A change in the form or function of a living organism, by a natural process of growth or development; as, the metamorphosis of the yolk into the embryo, of a tadpole into a frog, or of a bud into a blossom. Especially, that form of sexual reproduction in which an embryo undergoes a series of marked changes of external form, as the chrysalis stage, pupa stage, etc., in insects. In these intermediate stages sexual reproduction is usually impossible, but they ultimately pass into
Egg :: Egg (n.) The oval or roundish body laid by domestic poultry and other birds, tortoises, etc. It consists of a yolk, usually surrounded by the white or albumen, and inclosed in a shell or strong membrane..
Scramble :: Scramble (v. t.) To prepare (eggs) as a dish for the table, by stirring the yolks and whites together while cooking..
Somatic :: Somatic (a.) Of or pertaining to the wall of the body; somatopleuric; parietal; as, the somatic stalk of the yolk sac of an embryo..
Vitellin :: Vitellin (n.) An albuminous body, belonging to the class of globulins, obtained from yolk of egg, of which it is the chief proteid constituent, and from the seeds of many plants. From the latter it can be separated in crystalline form..
Yolk :: Yolk (n.) The yellow part of an egg; the vitellus.
Ichthin :: Ichthin (n.) A nitrogenous substance resembling vitellin, present in the egg yolk of cartilaginous fishes..
Deutoplasm :: Deutoplasm (n.) The lifeless food matter in the cytoplasm of an ovum or a cell, as distinguished from the active or true protoplasm; yolk substance; yolk..
Lecithin :: Lecithin (n.) A complex, nitrogenous phosphorized substance widely distributed through the animal body, and especially conspicuous in the brain and nerve tissue, in yolk of eggs, and in the white blood corpuscles..
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