[ fos-fer-uh-leys, -leyz, fos-fawr-uh-, -for- ]
/ ˈfɒs fər əˌleɪs, -ˌleɪz, fɒsˈfɔr ə-, -ˈfɒr- /

noun Biochemistry.

any enzyme, occurring widely in animal and plant tissue, that in the presence of an inorganic phosphate catalyzes the conversion of glycogen into sugar phosphate.

Origin of phosphorylase

First recorded in 1935–40; phosphor- + -yl + -ase Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for phosphorylase


/ (fɒsˈfɒrɪˌleɪs, -ˌleɪz) /


any of a group of enzymes that catalyse the hydrolysis of glycogen to glucose-1-phosphate

Word Origin for phosphorylase

C20: from phosphorus + -yl + -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

Medicine definitions for phosphorylase


[ fŏsfər-ə-lās′, -lāz′ ]


An enzyme that catalyzes the production of glucose phosphate from glycogen and inorganic phosphate.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.