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Definitions

illuminating

[ih-loo-muh-ney-ting] / ɪˈlu məˌneɪ tɪŋ /
ADJECTIVE
lighting up
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Researchers at the University of Missouri are developing a new way to determine which cancer patients are most likely to benefit from targeted therapies by illuminating tumors in medical scans.

From Science Daily • Mar. 16, 2026

The subject line of your email, to play therapist for a moment, was illuminating and revealed the heart of your conundrum.

From MarketWatch • Mar. 10, 2026

These events aren’t illuminating and feel instead like a bleak betrayal.

From Los Angeles Times • Feb. 27, 2026

In front of Moscow's ornate Bolshoi Theatre, its soft yellow lights illuminating a snowstorm in the Russian capital, Valentina Ivakina had come to "escape today's problems".

From Barron's • Feb. 18, 2026

Their beams pierce the dark, illuminating the interior of our car in shifting strobes.

From "I Can Make This Promise" by Christine Day