cyanometer

[ sahy-uh-nom-i-ter ]

noun

, Optics.

1. an instrument for measuring the amount and intensity of blue in light, as of the sky.

Word History and Origins

Origin of cyanometer¹

First recorded in 1820–30; cyano- ¹ + -meter

Example Sentences

An instrument called a “cyanometer,” meaning “measurer of blue,” is used for ascertaining the intensity of color in the sky.

From Project Gutenberg