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photometric brightness

American  
[foh-tuh-me-trik brahyt-nis] / ˌfoʊ təˈmɛ trɪk ˈbraɪt nɪs /

noun

  1. Optics. luminance.

photometric brightness Scientific  
/ fō′tə-mĕt′rĭk /

  1. See luminance

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.