illuminating
Americanadjective
Other Word Forms
- illuminatingly adverb
- nonilluminating adjective
- nonilluminatingly adverb
- unilluminating adjective
Etymology
Origin of illuminating
First recorded in 1555–65; illuminat(e) + -ing 2
Explanation
Something that's illuminating makes you better informed, more aware, or more inspired. An illuminating documentary film gives you all kinds of new information about its subject. Describe things as illuminating when they clarify the situation or explain the facts. A long conversation with someone you don't know well can be illuminating, helping you understand her much better. Likewise, studying the details of any subject, whether it's dog training or art history, is also illuminating. The verb illuminate means "light up," and it comes from the Latin word illuminare, "to throw into light or make bright," which is also figuratively used to mean "illustrate."
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
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
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
He held it in front of him with both hands, like a sword, fully illuminating his face.
From "Gregor the Overlander" by Suzanne Collins
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
