Definitions

1. adjective

Relating to or resembling the yolk of an egg, especially in being yellow or orange in color.

“The vitelline pigment was a key component in the artist’s new painting.”

2. noun

A vitelline vessel, a part of the embryonic development of a bird or reptile.

“During embryonic development, the vitelline vessel played a crucial role in supplying blood to the embryo.”