Student at Kendriya Vidyalaya Outreach Marketing El Paso United States
the yellow internal part of a bird's egg, which is surrounded by the white, is rich in protein and fat, and nourishes the developing embryo. Among animals which produce eggs, the yolk (also known as the vitellus) is the nutrient-bearing portion of the egg whose primary function is to supply food for the development of the embryo. Yolk definition is - the yellow spheroidal mass of stored food that forms the inner portion of the egg of a bird or reptile and is surrounded by the white. 7 days ago · the yellow, middle part of an egg: I like eggs lightly cooked so that the yolk is still runny. Yolk, the nutritive material of an egg, used as food by a developing, embryonic animal.