illumination (English)

Where does "illumination" come from?

The word illumination traces its ancestry back to the Proto-Indo-European *lewk-, meaning 'bright,' which eventually evolved into the Latin lūmen, or 'light.' By combining this with the prefix in-, Latin speakers created illuminō, which eventually passed through Late Latin and Middle French before entering English as illumination. Over time, the term expanded from its literal roots of lighting up a physical space to describe metaphorical enlightenment and the artistic decoration of manuscripts.

Full etymology tree

• illumination (English), 'The act of illuminating, or supplying with light; the state of being illuminated.'
  • borrowed illumination (Middle French)
    • inherited illuminatio (Latin), 'glory'
      • derived illūminō (Latin), 'to illuminate, light up, brighten'
        • prefix in- (Latin), 'un-, non-, not'
          • inherited *en (Proto-Italic), 'in'
            • inherited *h₁én (Proto-Indo-European), 'in'
        • compound lūminō (Latin), 'to illuminate'
          • derived lūmen (Latin), 'light, source of light'
            • inherited *louksmən (Proto-Italic)
              • inherited *léwk-s-mn̥ (Proto-Indo-European)
                • derived *lewk- (Proto-Indo-European), 'bright'
          • suffix -ō (Latin), 'Used to form masculine nouns with various meanings:'
      • suffix -tiō (Latin), '-tion, -ation, -ing; suffixed to verbs to form action nouns denoting a process, action, or result of an action.'

Direct ancestors

• illuminatio (Latin)
• illumino (Latin)
• illuminate (English)
• ion (English)

Updated July 2026

Etymology data from Wiktionary, CC BY-SA 4.0 · About Miraris