peptidase [pep-ti-deys, -deyz] Word Origin noun Biochemistry.
- any of the class of enzymes that catalyze the hydrolysis of peptides or peptones to amino acids.
- any of a group of proteolytic enzymes that hydrolyse peptides to amino acids
peptidase in Medicine peptidase [pĕp′tĭ-dās′, -dāz′] n.
- An enzyme that catalyzes the hydrolysis of peptides into amino acids.