水すい化か物ぶつすいかぶつMeanings1nounhydrateChemical term for a compound containing water molecules. Used in technical contexts.硫りゅう酸さん銅どう五ご水すい化か物ぶつは青あお色いろの結けっ晶しょうです。Copper sulfate pentahydrate is a blue crystal.