from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A hormone of cattle that regulates growth and milk production. It is also produced by genetic engineering and administered to cows to increase milk production. Also called bovine somatotropin.
Sorry, no etymologies found.
With regard to milk, for example, the manufacturers of the genetically modified bovine growth hormone known as rBGH have even tried to prevent dairy producers who don’t use it from stating so explicitly on their labels.