cosmic dust
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cosmic dust
n.
Clouds of fine particles of matter in interstellar and interplanetary space.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
cosmic dust
n
(Astronomy) fine particles of solid matter occurring throughout interstellar space and often collecting into clouds of extremely low density. See also nebula1
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
cos′mic dust′
n.
fine particles of matter in space.
[1925]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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| Noun | 1. | cosmic dust - clouds of particles or gases occurring throughout interstellar space extragalactic nebula, galaxy - (astronomy) a collection of star systems; any of the billions of systems each having many stars and nebulae and dust; "`extragalactic nebula' is a former name for `galaxy'" cloud - any collection of particles (e.g., smoke or dust) or gases that is visible |
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