-ase

a suffix used in the names of enzymes: oxidase.

Origin:
extracted from diastase

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins

World English Dictionary

-ase

—*suffix forming nouns*
	indicating an enzyme: oxidase

[abstracted from diastase]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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00:10

-ase is always a great word to know.

So is zedonk. Does it mean:

the offspring of a zebra and a donkey.

a stew of meat, vegetables, potatoes, etc.

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Etymonline

Word Origin & History

-ase

suffix used in naming enzymes, from ending of diastase.

Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage

Medical Dictionary

-ase suff.
Enzyme: amylase.

American Heritage

Science Dictionary

-ase
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.

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aminase amylase apyrase arginase asparaginase ATPase