lyase: Meaning and Definition of

ly•ase

Pronunciation: (lī'ās, -āz), [key]
— n. Biochem.
  1. any of various enzymes, as decarboxylase, that catalyze reactions involving the formation of or addition to a double bond.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.