non·​lu·​mi·​nous ˌnän-ˈlü-mə-nəs How to pronounce nonluminous (audio)
: not emitting light : not luminous
The results also suggest this galaxy contains a substantial amount of nonluminous matter.I. Peterson
a nonluminous celestial body

Examples of nonluminous in a Sentence

Recent Examples on the Web In this picture, a galaxy sits inside a larger conglomeration of nonluminous particles. Lyndie Chiou, Quanta Magazine, 7 Nov. 2022 The working assumption is that dark matter consists of nonluminous elementary particles, and that dark energy is the energy of space itself. Quanta Magazine, 23 Feb. 2022 All this points to the existence of a great, nonluminous, unseen mass. Ryan Bradley, Popular Science, 27 Oct. 2020 Ninety-five percent of all stuff takes mysterious, nonluminous forms dubbed dark matter and dark energy, which betray their presence in the cosmos by attracting and repulsing, respectively, the 5 percent of stuff that’s visible. Quanta Magazine, 4 Feb. 2019

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'nonluminous.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1825, in the meaning defined above

Time Traveler
The first known use of nonluminous was in 1825

Dictionary Entries Near nonluminous

Cite this Entry

“Nonluminous.” Dictionary, Merriam-Webster, Accessed 15 Apr. 2024.

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