[ fos-fuh-teys, -teyz ]
/ ˈfɒs fəˌteɪs, -ˌteɪz /

noun Biochemistry.

any of several classes of esterases of varying specificity that catalyze the hydrolysis of phosphoric esters.

Origin of phosphatase

First recorded in 1910–15; phosphate + -ase Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for phosphatase


/ (ˈfɒsfəˌteɪs, -ˌteɪz) /


any of a group of enzymes that catalyse the hydrolysis of organic phosphates
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 phosphatase


[ fŏsfə-tās′, -tāz′ ]


Any of numerous enzymes that catalyze the hydrolysis of esters of phosphoric acid and are important in the absorption and metabolism of carbohydrates, nucleotides, and phospholipids and in the calcification of bone.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.