The noun COLORIMETER has 1 sense: 1. a measuring instrument used in colorimetric analysis to determine the quantity of a substance from the color it yields with specific reagents. Familiarity information: COLORIMETER used as a noun is very rare.he noun COLORIMETER has 1 sense: 1. a measuring instrument used in colorimetric analysis to determine the quantity of a substance from the color it yields with specific reagents. Familiarity information: COLORIMETER used as a noun is very rare.
anhydride - a compound formed from one or more other compounds in a reaction resulting in removal of water. 1  acetic anhydride - a compound that is needed in order to refine opium into heroin. 2  phthalic anhydride - a white cyclic anhydride.
A selenide is a chemical compound containing a selenium anion with oxidation number of â2, much as sulfur does in a sulfide. The chemistry of the selenides and sulfides is similar. Similar to sulfide, in aqueous solution, the selenide ion, Se2â, is prevalent only in very basic conditions. In neutral conditions, hydrogen selenide ion, HSeâ, is most common. In acid conditions, hydrogen selenide, H2Se, is formed. Some selenides are reactive to oxidation by air. Owing to the greater ...