an instrument used for measuring the blueness of the sky
cyanometer in American English
(ˌsaiəˈnɑmɪtər)
noun
Optics
an instrument for measuring the amount and intensity of blue in light, as of the sky
Word origin
[1820–30; cyano-1 + -meter]This word is first recorded in the period 1820–30. Other words that entered Englishat around the same time include: acetate, blouse, boomerang, takeoff, tetrapod-meter is a combining form meaning “measure,” used in the names of instruments measuringquantity, extent, degree, etc. Other words that use the affix -meter include: chronometer, interferometer, nephelometer, spectrometer, thermometer
Examples of 'cyanometer' in a sentence
cyanometer
It was a cyanometer and its purpose was to measure the blueness of the sky.