noun, plural vi·tel·lus·es.
Words nearby vitellus
Origin of vitellus
Examples from the Web for vitellus
It has only been met with in the vitellus of some of the medium sized ova of a young female.
This vitellus or yolk undergoes a series of segmentation or dividings which are known as spontaneous segmentation.What a Young Husband Ought to Know|Sylvanus Stall
In Ascidia canina these processes become as long as the whole diameter of the vitellus (Kupffer, No. 60).The Works of Francis Maitland Balfour, Volume II (of 4)|Francis Maitland Balfour
It is formed from the vitellus at a much later period than the proper vitelline membrane.
Vitellus abdicated the Roman empire, which "he had received against his will."The Every Day Book of History and Chronology|Joel Munsell