Translation guide
A nanosecond is a unit of time equal to one billionth of a second. In English, it is often used hyperbolically to mean an extremely short amount of time. In Japanese, the literal term is ナノ秒, but for the hyperbolic sense, expressions like 一瞬 or あっという間 are more natural.
Referring to the precise scientific unit of one billionth of a second.
The standard scientific term for nanosecond. Used in technical contexts.
Emphasizing that something happens or is done in an incredibly brief time, often figuratively.
While ナノ秒 is the correct scientific term, using it in everyday hyperbolic expressions like 'I'll be back in a nanosecond' would sound unnatural. Use 一瞬 or あっという間 instead.
ちょっと待って、一瞬で戻るから。
Wait a moment, I'll be back in a nanosecond.
それは一瞬で起こった。
It happened in a nanosecond.
そのコンピューターはナノ秒でデータを処理する。
The computer processes data in nanoseconds.
This processor's cycle time is 1 nanosecond.
Means 'an instant' or 'a moment'. Very common and natural for hyperbolic use.
彼は一瞬でその問題を解いた。
He solved the problem in a nanosecond.
Literally 'in the time it takes to say ah', meaning 'in the blink of an eye'. Very natural for hyperbolic expressions.
あっという間に休みが終わった。
The vacation was over in a nanosecond.
Literally 'in the time it takes to blink'. Slightly more literary than あっという間.
瞬く間に彼は姿を消した。
He disappeared in a nanosecond.
A Buddhist term for an extremely short moment. Used in literary or philosophical contexts.
人生の刹那を大切に生きる。
Live cherishing every nanosecond of life.