[mod. f. L. acid-um ACID + Gr. μέτρον measure.] An instrument for measuring the strength of acids.
1839. Reid, Elem. Chem. Such instruments are termed Acidimeters when charged with alkali for ascertaining the value of acids.
1875. Ure, Dict. Arts, I. 21. Fill the acidimeter up to 0 (zero) with the solution of caustic lime. Ibid., I. 19. A standard liquor of ammonia of that strength (17 grains of ammonia in 1000) becomes therefore a universal acidimeter.
