Definition of micrometeoroid in English:

micrometeoroid

Line breaks: micro|meteor|oid
Pronunciation: /mʌɪkrəʊˈmiːtɪərɔɪd
 
/

noun

A microscopic particle in space or of extraterrestrial origin which is small enough not to burn up in the earth’s atmosphere but to drift to the surface instead.
More example sentences
  • Hazardous micrometeoroids and radiation also threaten spacewalkers, and with no atmosphere and therefore no atmospheric pressure, fluids in the human body would boil.
  • If a micrometeoroid or piece of space debris penetrates the tank, the dregs can ignite, causing an explosion that shatters the rocket body and creates a cloud of debris.
  • He or she points out that the shuttle would be less exposed to micrometeoroids and orbital debris at the altitude of Hubble than at the lower altitude of the space station.

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