(n) a measuring instrument used in colorimetric analysis to determine the quantity of a substance from the color it yields with specific reagents, Syn. tintometer
The Collaborative International Dictionary of English (GCIDE) v.0.53 Collaborative International Dictionary (GCIDE)
n. [ Color + -meter: cf. F. colorimètre. ] An instrument for measuring the depth of the color of anything, especially of a liquid, by comparison with a standard liquid. [ 1913 Webster ]