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WordReference Random House Learner's Dictionary of American English © 2024il•lu•mi•nate /ɪˈluməˌneɪt/USA pronunciation v. [~ + object], -nat•ed, -nat•ing. - to supply or brighten with light;
light up:The streets were well illuminated. - to decorate with lights:streets illuminated for the holidays.
- to make clear;
clear up;
clarify:illuminated many difficult points.
WordReference Random House Learner's Dictionary of American English © 2024il•lu•mi•nat•ing /ɪˈluməˌneɪtɪŋ/USA pronunciation adj. - helping to make clear or understandable:an illuminating lecture on mathematics.
il•lu•mi•nat•ing•ly, adv.
WordReference Random House Unabridged Dictionary of American English © 2024il•lu•mi•nate (v. i lo̅o̅′mə nāt′;adj., n. i lo̅o̅′mə nit, -nāt′),USA pronunciation v., -nat•ed, -nat•ing, adj., n. v.t. - to supply or brighten with light;
light up. - to make lucid or clear;
throw light on (a subject). - to decorate with lights, as in celebration.
- to enlighten, as with knowledge.
- to make resplendent or illustrious:A smile illuminated her face.
- to decorate (a manuscript, book, etc.) with colors and gold or silver, as was often done in the Middle Ages.
v.i. - to display lights, as in celebration.
- to become illuminated.
adj. - [Archaic.]illuminated.
- [Obs.]enlightened.
n. - [Archaic.]a person who is or affects to be specially enlightened.
- Latin illūminātus (past participle of illūmināre to light up, brighten). See illumine, -ate1
- late Middle English 1400–50
- 2.See corresponding entry in Unabridged clarify, explain, elucidate.
WordReference Random House Unabridged Dictionary of American English © 2024il•lu•mi•nat•ing (i lo̅o̅′mə nā′ting),USA pronunciation adj. - giving or casting light.
- informative;
enlightening.
- illuminate + -ing2 1555–65
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