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1. (n.) cosmic dust
fine particles of matter in space.
Etymology: (1925)
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| Definition of 'cosmic dust' |
Princeton's WordNet |
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1. (noun) cosmic dust
clouds of particles or gases occurring throughout interstellar space
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| Definition of 'cosmic dust' |
U.S. National Library of Medicine |
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1. cosmic dust
Finely divided solid matter with particle sizes smaller than a micrometeorite, thus with diameters much smaller than a millimeter, moving in interplanetary space. (NASA Thesaurus, 1994)
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Definitions of cosmic dust 
