vitellus
Example Sentences
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Yolk, yōk, Yelk, yelk, n. the yellow part of an egg: the vitellus of a seed: wool-oil.—adjs.
From Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements) by Various
This vitellus or yolk undergoes a series of segmentation or dividings which are known as spontaneous segmentation.
From What a Young Husband Ought to Know by Stall, Sylvanus
Si vero fuerit in aestate vitellus avi semper superponatur.
From Gilbertus Anglicus Medicine of the Thirteenth Century by Handerson, Henry Ebenezer
Thus, in Fishes, the first changes consist in the segmentation of the vitellus and the formation of a germ, processes which are common to all classes of animals.
From Facts and Arguments for Darwin by Muller, Fritz
Now, the human ovum or egg consists of a vitellus or yolk, which is covered by a similar membrane, known as the vitelline.
From What a Young Husband Ought to Know by Stall, Sylvanus