noun. any enzyme that catalyzes the splitting of proteins into smaller peptide fractions and amino acids by a process known as proteolysis.
- angiotensin converting enzyme
- angiotensin-converting enzyme
- plasminogen activator
Example sentences of the word peptidase
1. Noun, singular or mass
In the duodenum, the trypsin enzyme from the pancreas and the intestinal peptidase enzymes continue the process.