- either of two isomeric compounds, CHO, especially the yellow, crystalline isomer used in making dyes
- any of a series of compounds of this type
Origin of quinonequin(ic acid) + -one
- Either of two isomeric unsaturated cyclic compounds having the formula C6H4O2, found widely in plants, especially in a yellow crystalline form, and used in making dyes, tanning hides, and photography.
- Any of various quinonoid compounds, often yellow to red in color, many of which have biological derivation or importance, such as coenzyme-Q.
quinine +"Ž -one