Type: Term Pronunciation: kas′pās-ĕz Definitions: 1. Proteolytic cleavage products of the protein's procaspases that are responsible for cleaving and activation of additional procaspases into more caspases, thus resulting in a cascade of proteolytic activity the final result of which is apoptosis of the cell. Found on http://www.medilexicon.com/medicaldictionary.php?t=14855