The scientific name for water is either water or oxidane, according to the International Union of Pure and Applied Chemistry. Water may also be referred to as H2O or HOH, based on its composition of two hydrogen atoms and one oxygen atom.
Other scientific terms for water include hydrogen oxide, hydrogen monoxide, hydrogen hydroxide, dihydrogen oxide, hydroxic acid, hydric acid and hydrohydroxic acid. The term dihydrogen monoxide, abbreviated as DHMO, may also technically refer to water, but is more associated with a hoax to refer to water as a toxic substance. When water is polarized, it may be referred to as hydron hydroxide. Names for related compounds include deuterium oxide, hydrogen peroxide and hydrogen sulfide.