noun Biochemistry.

any of a class of intracellular proteolytic enzymes, occurring in animal tissue, especially the liver, spleen, kidneys, and intestine, that catalyze autolysis in certain pathological conditions and after death.

Origin of cathepsin

1925–30; < Greek kathéps(ein) to digest (kat- cat- + hépsein to boil) + -in2
Related formsca·thep·tic [kuh-thep-tik] /kəˈθɛp tɪk/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for cathepsin



a proteolytic enzyme responsible for the autolysis of cells after death

Word Origin for cathepsin

C20: from Greek kathepsein to boil down, soften
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