Definitions

cosmic dust

NOUN

small particles of matter found in outer space

Synonyms

WEAK

meteor dust space dust

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"You've got this small amount of cosmic dust raining down everywhere, but you've also got Earth sediments accumulating pretty fast."

From Science Daily • Nov. 13, 2025

A study published on November 6 in Science shows that identifying where this cosmic dust appears, and where it is missing, offers clues about how sea ice coverage has changed over thousands of years.

From Science Daily • Nov. 13, 2025

Most of the emitted light, for example visible light and X-ray, get blocked by thick layers of cosmic dust and can’t pass through the accretion disk around them.

From Space Scoop • Mar. 27, 2025

Unlike visible light, radio waves from hot gasses are not blocked that easily by cosmic dust.

From Space Scoop • Mar. 27, 2025

Then he was floating in what felt like waves of cosmic dust, swirling many-colored before his eyes.

From The Colors of Space by Bradley, Marion Zimmer