WordReference Random House Unabridged Dictionary of American English © 2026
per•me•ase
(pûr′mē ās′, -āz′),USA pronunciation n. [Biochem.]
- Biochemistryany of the proteins that mediate the transport of various molecules across biological membranes.
- French perméase (1956), equivalent. to permé(able) permeable + -ase -ase