Translation guide
Expresses an extremely short time interval, one billionth of a second. In Japanese, this is primarily expressed using the borrowed term ナノ秒 (nanosecond), but can also be described more technically or in scientific contexts.
The standard term for a billionth of a second, used in technology, physics, and general contexts.
The most common and natural way to say 'billionth of a second' in Japanese. It is a direct loanword from English 'nanosecond' and is widely understood.
This processor can execute an instruction in one nanosecond.
A more literal, descriptive phrase meaning 'one billionth of a second'. It is less common in everyday tech contexts but may be used in educational or explanatory settings.
光は1ナノ秒に約30センチメートル進む。
Light travels about 30 centimeters in one nanosecond.
One nanosecond is one billionth of a second.