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cyanometer

[sahy-uh-nom-i-ter] /ˌsaɪ əˈnɒm ɪ tər/
noun, Optics.
1.
an instrument for measuring the amount and intensity of blue in light, as of the sky.
Origin
1820-1830
1820-30; cyano-1 + -meter
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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10
11
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