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pyrone

American  
[pahy-rohn, pahy-rohn] / ˈpaɪ roʊn, paɪˈroʊn /

noun

Chemistry.

  1. either of two heterocyclic ketones having the formula C 5 H 4 O 2 .

pyrone British  
/ ˈpaɪrəʊn, paɪˈrəʊn /

noun

  1. either of two heterocyclic compounds that have a ring containing five carbon atoms and one oxygen atom with two double bonds and a second oxygen atom attached to a carbon atom in either the ortho -position ( alpha pyrone ) or the para -position ( gamma pyrone )

  2. any one of a class of compounds that are substituted derivatives of a pyrone

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of pyrone

First recorded in 1890–95; pyr- + -one

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.