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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.

Another image showed flames erupting from a ground-mounted engine, illuminating the surrounding test site in orange light.

From Barron's • Mar. 29, 2026

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

Gates has assembled a stimulating, illuminating, maddening, saddening, but often inspiring, story of their relations with the world and one another.

From Los Angeles Times • Feb. 3, 2026

“Ahh, nice try, Stella,” I say, laughing as a bright light comes on, illuminating their faces.

From "Five Feet Apart" by Rachael Lippincott