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illumination

C2
Fairly common

Pronunciation

UK

  • /ɪlˌuːmɪnˈeɪʃən/

US

  • /ˌɪˌluməˈneɪʃən/

Meanings

Noun

  1. light supplied to or shining on a place or object

  2. new understanding or clarity about something

  3. decorative artwork added to a manuscript or book

Beyond the definition

Illumination can refer to the physical act of lighting something up. You can see it in the soft illumination of a room, the glow on stained-glass windows, or the bright light from a streetlamp at night. But it can also mean a moment of clear understanding, when something finally makes sense. A good teacher can bring illumination to a difficult topic, and a new fact can bring illumination to a mystery.

The word comes from the Latin illuminare, meaning "to light up." You might feel a sense of illumination while reading a helpful book, or notice it in the lights that make a building stand out at night. The idea connects light with understanding, so the word works for both what helps us see and what helps us understand.

Examples

  1. 1

    Interior lighting

    The room was filled with soft illumination from the lamps by the window.

  2. 2

    Night safety

    The path has enough illumination at night to make it safe for cyclists.

  3. 3

    Business history

    The documentary offers some illumination on how the company made its early decisions.

    • Patternillumination on + topic

      helpful explanation or understanding about it

  4. 4

    Historical insight

    Her letters give us rare illumination into daily life during the war.

    • Phraserare illumination

      uncommon insight or understanding

More examples
  1. 5

    Festival lights

    The town square was decorated with colorful illuminations for the festival.

See also

Similar

Shades of meaning

Contrast

Used with (collocations)

  • provide illumination
  • ambient illumination
  • illumination level
  • source of illumination

Word family

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Forms and spellings

2 forms open this card.

Main spelling

  • illuminationnoun

Forms

  • illuminationspluralnoun