Chemical term describing an oxygen atom bound to two linked carbon atoms Generally, any cyclic ether, but commonly applied to a 3-membered ring; specifically, a three-membered ring is an oxirane, a four-membered ring is an oxetane, a five-membered ring is an oxolane, and a six membered ring is an oxane; oxiranes are commonly produced from peracids acting on alkenes. Epoxys are important chemical intermediates, and the basis of epoxy resins (polymers) formed from epoxy monomers.

(05 Mar 2000)