illuminances

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A form of illuminance — The luminous flux incident on unit area of a surface; commonly measured in lux (lumen/metre²) or otherwise foot-candles. The illuminance of a star upon the earth is frequently measured on a negative logarithmic scale referred to as its apparent magnitude, which see.

Scrabble 16
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Meanings

noun
  1. pluralplural of illuminance
Cite this entry
APA

illuminances. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/illuminances

MLA

“illuminances.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/illuminances. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “illuminances,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/illuminances.

Source: illuminances on Wiktionary, CC BY-SA 4.0.