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Definition of micron noun from the Oxford Advanced Learner's Dictionary

micron

noun
 
/ˈmaɪkrɒn/
 
/ˈmaɪkrɑːn/
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  1. micrometre (= a unit for measuring length, equal to one millionth of a metre) The term micron is still in common use, but micrometre is now preferred in scientific contexts.
    Word Originlate 19th cent.: from Greek mikron, neuter of mikros ‘small’.
See micron in the Oxford Advanced American Dictionary
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noun
 
 
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