from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A ring-shaped organic compound consisting of an oxygen atom bonded to two other atoms, usually of carbon, that are already bonded to each other.
- n. A compound containing such a structure.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of a class of organic compound, cyclic ethers, having a three-membered ring; they are prepared by the selective oxidation of alkenes or by ring-closure of halohydrins; used to make plastics.
Sorry, no etymologies found.