n. The triglyceride of butyric acid; the principal constituent of butterfat
the GNU version of the Collaborative International Dictionary of English
n. A butyrate of glycerin; a fat contained in small quantity in milk, which helps to give to butter its peculiar flavor.
The Century Dictionary and Cyclopedia
n. A triglycerid, C3H5(C4H7O2)3, which is a constant constituent of butter, together with olein, stearin, and other glycerids. It is a neutral yellowish liquid fat, having a sharp, bitter taste.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. any of three glycerides of butyric acid
Word Usage
"The flavor of the fat is due to the presence of a small amount of butyrin, which is an ethereal salt of butyric acid."