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

 

microsecond

 noun
noun
BrE BrE//ˈmaɪkrəʊsekənd//
 
; NAmE NAmE//ˈmaɪkroʊsekənd//
 
(specialist)(symbol μs)
 
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one millionth of a second
See the Oxford Advanced American Dictionary entry: microsecond