Pronunciation: (su-pon'u-fī"), [key]
—v., -fied, -fy•ing. Chem.
1. to convert (a fat) into soap by treating with an alkali.
2. to decompose (any ester), forming the corresponding alcohol and acid or salt.
to become converted into soap.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.