anhydrideA chemical compound derived from another compound by dehydration (i.e., removing water). Most inorganic anhydrides are soluble oxides which dissolve in water to give alkalis or oxy-acids. Thus, sulfur trioxide (SO3) is the anhydride of sulfuric acid (H2SO4). See also acid anhydride. Related categories• INORGANIC CHEMISTRY• ORGANIC CHEMISTRY Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History |