Drainage basin: The area drained by a river and its tributaries. A drainage basin is considered to be an open system because water can be added or lost from a drainage basin.
Noun. 1. milk whey-the serum or watery part of milk that is separated from the curd in making cheese. whey. blood serum, serum-an amber, watery fluid, rich in proteins, that separates out when blood coagulates. 1  Facebook. 2  Twitter.
Whey Protein. One of the most popular forms of protein powders, whey protein is a mixture of globular proteins that are isolated from the liquid that is a by-product of cheese production. After milk solids coagulate, there is a clear liquid that is left over, called whey, that is 5% lactose, part mineral, part fat, and part protein â of course. This protein is also rich in the amino acids leucine, isoleucine and valine which are essential to the production of lean muscle mass.