Synonyms

cosmic dust

American

noun

Astronomy.

fine particles of matter in space.

cosmic dust British

noun

fine particles of solid matter occurring throughout interstellar space and often collecting into clouds of extremely low density See also nebula

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of cosmic dust

First recorded in 1880–85

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.

See Examples For:

cosmic dust

In space, cosmic dust develops under extreme conditions.

From Science Daily ● Jul. 19, 2026

The team also plans to assemble a detailed database of infrared fingerprints produced by different types of laboratory made cosmic dust.

From Science Daily ● Jul. 19, 2026

My colleagues in planetary science and I analyze images from night sky camera networks to study cosmic dust, small asteroids and debris left behind by comets.

From Science Daily ● May 14, 2026

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

A layer of cosmic dust hung over the rocks.

From The Secret of the Ninth Planet by Wollheim, Donald Allen

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023