Find another word for yolk. In this page you can discover 9 synonyms, antonyms, idiomatic expressions, and related words for yolk, like: vitellum, egg-yolk, center, egg, vitellus, egg-yolk, yellow, egg-yellow and yelk.
in diameter, with little yolk, and the embryos provided with large trophic vesicles (Willey).
The embryo passes through three stages - (I) still enclosed within the egg and living on its own yolk; (2) free, within the vitelline mass, which is directly swallowed by the mouth; (3) there is no more vitelline mass, but the embryo is possessed of long external gills, which serve for an exchange of nutritive fluid through the maternal uterus, these gills functioning in the same way as the chorionic villi of the mammalian egg.
Nevertheless, instances were adduced where the most careful heating of yolk of egg, milk, hay-infusions, &c., had failed, - the boiled infusions, &c., turning putrid and swarming with bacteria after a few hours.
Ova large and heavily charged with yolk, and provided with a stoutish shell.