vitellus

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Related to vitelluses: yolky

yolk

 [yōk]
the stored nutrient of the ovum.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

yolk

(yōk, yōlk),
1. One of the types of nutritive material stored in the oocyte (ovum) for the nutrition of the embryo; yolk is particularly abundant and conspicuous in the eggs of birds. Synonym(s): vitellus
2. Fatty material found in the wool of sheep; when extracted and purified, it becomes lanolin.
[A.S. geolca; geolu, yellow]
Farlex Partner Medical Dictionary © Farlex 2012

vitellus

(vĭ-tĕl′əs, vī-)
n. pl. vitel·luses
The yolk of an egg.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

yolk

(yōk)
1. One of the types of nutritive material stored in the oocyte for the nutrition of the embryo; particularly abundant and conspicuous in the eggs of birds.
Synonym(s): vitellus.
2. Fatty material found in the wool of sheep; when extracted and purified, it becomes lanolin.
[A.S. geolca;geolu, yellow]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012