noun. A chemical compound, especially an ionic compound, containing a hydroxyl group.

noun. A hydrate; a substance containing hydrogen and oxygen, made by combining water with an oxide, and yielding water by elimination. The hydroxides are regarded as compounds of hydroxyl, united usually with basic element or radical.

noun. An univalent anion (OH-1) based on the hydroxyl functional group.

noun. Any substance containing such an anion.

noun. a compound of an oxide with water

noun. a chemical compound containing the hydroxyl group

"But if we consider hydrogen as a gasiform metal, we naturally arrive at the conclusion that _water is the hydroxide of this gasiform metal_, that is _hydrogen hydroxide_, while gaseous hydrochloric and hydrosulphuric acids would be looked upon as respectively the chloride and the sulphide of the metal hydrogen."

hydrogen ion  hydronium  pH  pOH  

aluminium hydroxide  aluminum hydroxide  ammonium hydroxide  barium hydroxide  beryllium hydroxide  

chemical compound  compound  

monoxide  

acetate  bicarbonate  bromide  chlorine  citrate  

hydrate