What is the X in X-mas?
hydroxide hy·drox·ide (hī-drŏk'sīd')
A chemical compound containing the hydroxyl group, especially one that releases a hydroxyl group when dissolved.
A chemical compound containing one or more hydroxyl radicals (OH). Inorganic hydroxides include hydroxides of metals, some of which, like sodium hydroxide (caustic soda) and calcium hydroxide, are strong bases that are important industrial alkalis. Some metal hydroxides, such as those of zinc and lead, are amphoteric (they act like both acids and bases). Organic hydroxides include the alcohols.