lyase

[lahy-eys, -eyz]
noun Biochemistry.
  1. any of various enzymes, as decarboxylase, that catalyze reactions involving the formation of or addition to a double bond.

Origin of lyase

1960–65; < Greek lý(ein) to loosen, dissolve (see lysis) + -ase
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for lyase

lyase

noun
  1. any enzyme that catalyses the separation of two parts of a molecule by the formation of a double bond between them

Word Origin for lyase

C20: from Greek lusis a loosening + -ase
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

lyase in Medicine

lyase

[līās′]
n.
  1. Any of a group of enzymes that catalyze the formation of double bonds by removing chemical groups from a substrate without hydrolysis or catalyze the addition of chemical groups to double bonds.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.