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 is a product of cheese making -- itâs the watery part of milk that separates from the curds. Some people use whey as a source of protein or as a supplement for health conditions. Protein powders are popular with athletes, particularly those doing strength training. They provide a good source of nutrients and amino acids. Some people take whey protein because they are lactose intolerant or allergic to other protein sources, like eggs or soy. Several studies have found that whey protein, when combined with strength training, might increase strength, muscle size, and lean body mass.