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illuminometer

American

[ih-loo-muh-nom-i-ter] / ɪˌlu məˈnɒm ɪ tər /

noun

an instrument for measuring illumination.

Etymology

Origin of illuminometer

First recorded in 1890–95; illumin(ation) + -o- + -meter

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.