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

Since then, astronomers have discovered that all large galaxies seem to be surrounded by similar haloes of what is now known as dark matter. —Robert Lea, Space.com, 27 June 2025

Rubin is located on the summit of Cerro Pachón in Chile and was named after Vera C. Rubin, a pioneer in dark matter research. —Monica Cull, Discover Magazine, 23 June 2025

But to complicate matters, there is other stuff in the universe that doesn’t appear to be made from normal atoms at all, called dark matter. —Stephen L. Levy, The Conversation, 23 June 2025

The facility, named after Vera C. Rubin — the astronomer who confirmed the existence of dark matter in galaxies — aims to continue her legacy by mapping dark matter and probing dark energy. —Jamie Carter, Forbes.com, 23 June 2025

Word History

First Known Use

1933, in the meaning defined above

Rhymes for dark matter

• backscatter
• antimatter
• atter
• batter
• blatter
• catarrh
• chatter
• clatter
• fatter
• flatter
• hatter
• latter