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1. A corrosive, oxidizing acid, H2CrO4, occurring only as salts or in solution.
2. The anhydride of chromic acid, CrO3, a purplish crystalline material that reacts explosively with reducing agents and is used in chromium plating, as an oxidizing agent, and to color glass and rubber.
(Elements & Compounds) an unstable dibasic oxidizing acid known only in solution and in the form of chromate salts. Formula: H2CrO4
a hypothetical acid, H2CrO4, known only in solution or in the form of its salts.