Definition of meteor
1
: an atmospheric phenomenon (such as lightning or a snowfall)
2a
: any of the small particles of matter in the solar system that are directly observable only by their incandescence from frictional heating on entry into the atmosphere
b
: the streak of light produced by the passage of a meteor
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Merriam-Webster unabridged
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The first known use of meteor was in the 15th century
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