illuminance

UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/ɪˈluːmɪnəns/US:USA pronunciation: respellingUSA pronunciation: respelling(i lo̅o̅′mə nəns)


WordReference Random House Unabridged Dictionary of American English © 2026
il•lu•mi•nance  (i lo̅o̅′mə nəns),USA pronunciation n. [Optics.]
  1. illumination (def. 6).
  • illumin(ate) + -ance 1940–45

Collins Concise English Dictionary © HarperCollins Publishers::
illuminance /ɪˈluːmɪnəns/ n
  1. the luminous flux incident on unit area of a surface. It is measured in luxSometimes called: illumination
    Compare irradiance
'illuminance' also found in these entries (note: many are not synonyms or translations):
illumination - irradiance - foot-candle

Forum discussions with the word(s) "illuminance" in the title:


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