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illuminometer

[ ih-loo-muh-nom-i-ter ]
/ ɪˌlu məˈnɒm ɪ tər /
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noun
an instrument for measuring illumination.
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Origin of illuminometer

First recorded in 1890–95; illumin(ation) + -o- + -meter
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022
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