Definition of "micrometeoroid" []

• A very small, often dust-sized meteoroid. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "It looked as if it was made of frozen rock, the nowmatte plating pitted with micrometeoroid impacts."
• "I mean completely authentic Mark III H-1s with single axis rolling convolute waist joints, and vintage Skylab A7Ls with micrometeoroid cover layers."
• "Among other maintenance tasks, they were there to investigatedamagetoan external handrail ofthe ISS that may have been caused by a micrometeoroid."