Dictionary.com
definitions

cyanometer

[sahy-uh-nom-i-ter]
|

noun Optics.

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

Origin of cyanometer

First recorded in 1820–30; cyano-1 + -meter
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for cyanometer

Historical Examples of cyanometer

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