nanosecond
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A unit of time representing one billionth of a second.
Historical perspective: By 2016, high-speed trading got closer to the speed of light. According to The Wall Street Journal, it took one fintech firm just 85 nanoseconds -- 85 billionths of a second -- to send data back and forth to a stock exchange, giving them a tiny but critical edge.
See also : hyperspeed ohnosecond
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