[ ih-loo-muh-ney-ting ]
/ ɪˈlu məˌneɪ tɪŋ /


giving or casting light.
informative; enlightening.

Origin of illuminating

First recorded in 1555–65; illuminate + -ing2

Related forms

non·il·lu·mi·nat·ing, adjectivenon·il·lu·mi·nat·ing·ly, adverbun·il·lu·mi·nat·ing, adjective

Definition for illuminating (2 of 2)

Origin of illuminate

1400–50; late Middle English < Latin illūminātus (past participle of illūmināre to light up, brighten). See illumine, -ate1

Related forms Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for illuminating

British Dictionary definitions for illuminating (1 of 2)


/ (ɪˈluːmɪˌneɪtɪŋ) /


serving to inform or clarify; instructive

Derived Forms

illuminatingly, adverb

British Dictionary definitions for illuminating (2 of 2)


verb (ɪˈluːmɪˌneɪt)

adjective (ɪˈluːmɪnɪt, -ˌneɪt)

archaic made clear or bright with light; illuminated

noun (ɪˈluːmɪnɪt, -ˌneɪt)

a person who has or claims to have special enlightenment

Derived Forms

illuminative, adjectiveilluminator, noun

Word Origin for illuminate

C16: from Latin illūmināre to light up, from lūmen light
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012