[ sahy-uh-nom-i-ter ]
/ ˌsaɪ əˈnɒm ɪ tər /

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 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for cyanometer

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