cosmic dust

SEE SYNONYMS FOR cosmic dust ON THESAURUS.COM

noun Astronomy.

fine particles of matter in space.

Origin of cosmic dust

First recorded in 1880–85

Words nearby cosmic dust

cosmetize, cosmetologist, cosmetology, cosmic, cosmic background radiation, cosmic dust, cosmic microwave background, cosmic noise, cosmic ray, cosmic rays, cosmic string

British Dictionary definitions for cosmic dust

cosmic dust

noun

fine particles of solid matter occurring throughout interstellar space and often collecting into clouds of extremely low density See also nebula (def. 1)