colorimeter n 1: a measuring instrument used in colorimetric analysis to determine the quantity of a substance from the color it yields with specific reagents [syn: {colorimeter}, {tintometer}]
Colorimeter \Col`or*im"e*ter\, n. [Color + -meter: cf. F. colorim[`e]tre.] An instrument for measuring the depth of the color of anything, especially of a liquid, by comparison with a standard liquid. [1913 Webster]