Focus on the pronunciation of nanosecond
English definition of “nanosecond”
/ˈnænəʊˌsekənd/ noun [C]
› 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.