Cy'a-nŏm'e-ter, n.

n. [Fr. cyanomètre, from Gr. κυανός, dark blue, and μέτρον, measure.] An instrument invented by Saussure for estimating or measuring degrees of blueness, as of the sky. It consists of a scale in which the spaces present different shades of blue in a regular series, from the lightest to the deepest, and the hue of the object is measured by its correspondence with one of these shades. Nichol.