Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Either of two isomeric unsaturated compounds with the formula C5H6O, having a ring of five carbon atoms and one oxygen atom.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun chemistry Any of a
class ofheterocyclic compounds containing aring of fivecarbon atoms and anoxygen atom; especially thesimplest one, C5H6O.
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
[pyrone, heterocyclic compound (pyr(o)– + –one) + –an.]
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