Pronunciation: (in-hib'i-tur),[key] —n. 1. a person or thing that inhibits.
2. Chem.a substance that decreases the rate of or stops completely a chemical reaction.
3. any impurity in a mineral that prevents luminescence. Cf. activator (def. 3).
4. Rocketry.an inert antioxidant used with solid propellants to inhibit burning on certain surfaces. Also,in•hib'it•er.