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View synonyms for cosmic dust

cosmic dust

noun

Astronomy.
  1. fine particles of matter in space.



cosmic dust

noun

  1. 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
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Word History and Origins

Origin of cosmic dust1

First recorded in 1880–85

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cosmic background radiationcosmic microwave background