Enol

noun

1. An organic compound containing a hydroxyl group bonded to a carbon atom, which in turn is doubly bonded to another carbon atom.
2. One of several compounds containing the unsaturated alcoholic group –CH:COH–.
3. An organic compound containing a hydroxyl group bonded to a carbon atom, which is doubly bonded to another carbon atom.
4. an organic compound that contains a hydroxyl group bonded to a carbon atom which in turn is doubly bonded to another carbon atom