isomerase [ahy-som-uh-reys, -reyz] Word Origin noun Biochemistry.
- any of a class of enzymes that catalyze reactions involving intramolecular rearrangements.
Origin of isomerase First recorded in 1940–45; isomer + -ase British Dictionary definitions for isomerase isomerase noun
- any enzyme that catalyses the conversion of one isomeric form of a compound to another
isomerase in Medicine isomerase [ī-sŏm′ə-rās′] n.
- One of a group of enzymes that catalyzes the conversion of one isomer into another.