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-ase

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  1. a suffix used in the names of enzymes: oxidase.

Origin of -ase

extracted from diastase
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for -ase

-ase

suffix forming nouns
  1. indicating an enzymeoxidase

Word Origin

abstracted from diastase
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

Word Origin and History for -ase

word-forming element used in naming enzymes, from ending of diastase.

Online Etymology Dictionary, © 2010 Douglas Harper

-ase in Medicine

-ase

suff.
  1. Enzyme:amylase.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

-ase in Science

-ase

  1. A suffix used to form the names of enzymes. It is often added to the name of the compound that the enzyme breaks down, as in lactase, which breaks down lactose. It is also added to a word describing the enzyme's activity, as in transferase, which catalyzes the transfer of a chemical group from one molecule to another, or reductase, which catalyzes the reduction of an organic compound.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.