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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.
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Origin of cyanometer

First recorded in 1820–30; cyano-1 + -meter
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for cyanometer

Historical Examples

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

    The Wonder Book of Knowledge

    Various