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

This includes probing the nature of dark matter, the invisible sort of matter that somehow dominates the universe, and dark energy, the mysterious force causing the expansion of our universe to accelerate. — Robert Lea, Space.com, 10 Sep. 2026

The thick layer of rock shields it from cosmic rays, while a water tank and outer detectors help block or identify other particles that could mimic a dark matter signal. — Neetika Walter, Interesting Engineering, 1 Sep. 2026

There, situated 750,000 miles beyond the moon, Roman will begin its science mission to study dark energy, dark matter and exoplanets. — Lee Billings, Scientific American, 31 Aug. 2026

Its five-year mission is to study dark matter and hunt for habitable worlds outside our solar system. — Eric Lagatta, USA Today, 31 Aug. 2026

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