nonluminous
adjective
non·lu·mi·nous
ˌnän-ˈlü-mə-nəs 
: not emitting light : not luminous
The results also suggest this galaxy contains a substantial amount of nonluminous matter.—
I. Peterson
I. Petersona 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
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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
Cite this Entry
“Nonluminous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nonluminous. Accessed 3 Jul. 2025.
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