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Added 10 October 2026

luminosity

noun

noun Definition from WordNet 3.1, Princeton University. More about luminosity at Wordnik → Where our words come from →

The quality of being luminous; emitting or reflecting light.
its luminosity is measured relative to that of our sun

Origin

Borrowed from French luminosité or else a native formation from luminous + -ity.

From Wiktionary, via Kaikki.org (CC BY-SA)

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