Translation guide
The English word 'multiplier' refers to something that multiplies or increases an effect. In Japanese, the translation depends on context: mathematics, economics, photography, or general increase.
A number by which another number is multiplied.
Standard mathematical term for multiplier, as in 'multiplicand × multiplier = product'.
乗数が2の場合、積は元の数の2倍になります。
When the multiplier is 2, the product becomes twice the original number.
Descriptive phrase meaning 'the number that multiplies', used in elementary math contexts.
掛ける数と掛けられる数を入れ替えても答えは同じです。
Even if you swap the multiplier and the multiplicand, the answer is the same.
A factor by which an initial change is multiplied to give the final change in an economic variable.
Used in economics for the multiplier effect (e.g., fiscal multiplier).
政府支出の乗数効果は経済成長を促進する。
The multiplier effect of government spending promotes economic growth.
A lens or setting that multiplies the focal length of a camera lens.
Common term for a teleconverter, a device that increases focal length.
テレコンバーターを使うと焦点距離が1.4倍になります。
Using a teleconverter increases the focal length by 1.4 times.
Often used for Canon's teleconverters, but understood generically.
エクステンダーを装着して遠くの被写体を撮影した。
I attached an extender and photographed a distant subject.
A person or thing that multiplies or increases something.
Descriptive phrase meaning 'something that doubles/increases'.
この装置は生産性を倍増させるものだ。
This device is a multiplier of productivity.
Literally 'amplifier', used for signals, emotions, etc.
彼の存在はチームの士気の増幅器だ。
His presence is a multiplier of team morale.
Directly translating 'multiplier' as マルチプライヤー is rarely used and may not be understood. Use context-appropriate terms.
Specifically 'multiplier effect', a common economics term.
投資の乗数効果は景気回復に重要だ。
The multiplier effect of investment is important for economic recovery.