micrometeoroid

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mi·cro·me·te·or·oid

 (mī′krō-mē′tē-ə-roid′)
n.
A very small, often dust-sized meteoroid.
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.

micrometeoroid

(ˈmaɪkrəʊˈmiːtɪəˌraɪt) astronomy
n
(Astronomy) an extremely small meteoroid
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.micrometeoroid - a meteorite or meteoroid so small that it drifts down to earth without becoming intensely heated in the atmospheremicrometeoroid - a meteorite or meteoroid so small that it drifts down to earth without becoming intensely heated in the atmosphere
meteorite - stony or metallic object that is the remains of a meteoroid that has reached the earth's surface
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References in periodicals archive ?
Meteor collision may have hurt NOAA satellite A recent disruption in data flowing from a weather satellite operated by the National Oceanic and Atmospheric Administration may have been caused by the satellite smacking into a micrometeroid, NOAA says.
Future nonwoven space applications may include bumper material for the outside of the International Space Station (ISS) on Mars and on interplanetary mission vehicles as high velocity impact protection from micrometeroid and orbital debris.