Definition of “nanosecond” - English Dictionary

“nanosecond” in Business English

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nanosecondnoun [ C ]

uk /ˈnænəʊˌsekənd/ us

MEASURES, IT a measurement equal to one billionth of a second, used to describe the speed at which a computer works on data:

The chip's memory access time of 26 nanoseconds made it highly competitive.
in a nanosecond

in an extremely short time:

Following the scandal, their stocks went from 100 to zero in a nanosecond.

(Definition of “nanosecond” from the Cambridge Business English Dictionary © Cambridge University Press)