dark matter
noun
: nonluminous matter not yet directly detected by astronomers that is hypothesized to exist to account for various observed gravitational effects
Examples of dark matter in a Sentence
Recent Examples on the Web
Continue reading … BUREAUCRACY BONFIRE — HHS wipes out 36,000 pages of ‘regulatory dark matter’ in child welfare office purge.
—
FOXNews.com, 20 Feb. 2026
These long strands, filaments of the cosmic web, are dominated by this unseen dark matter.
—Paul Sutter, Space.com, 16 Feb. 2026
Scientists conduct a variety of experiments, such as searching for dark matter and exploring the effects of space radiation and microgravity.
—Rodney Ho, AJC.com, 11 Feb. 2026
Boyle’s hypothesis also predicts that dark matter could be explained by a particular kind of neutrino.
—Sarah Scoles, Scientific American, 10 Feb. 2026
See All Example Sentences for dark matter
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
FOXNews.com, 20 Feb. 2026
These long strands, filaments of the cosmic web, are dominated by this unseen dark matter.
—Paul Sutter, Space.com, 16 Feb. 2026
Scientists conduct a variety of experiments, such as searching for dark matter and exploring the effects of space radiation and microgravity.
—Rodney Ho, AJC.com, 11 Feb. 2026
Boyle’s hypothesis also predicts that dark matter could be explained by a particular kind of neutrino.
—Sarah Scoles, Scientific American, 10 Feb. 2026
See All Example Sentences for dark matter
Cite this Entry
“Dark matter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dark%20matter. Accessed 24 Feb. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
