Noun
One who, or that which, multiplies or increases number.
The number by which another number is multiplied. See the Note under Multiplication.
An instrument for multiplying or increasing by repetition or accumulation the intensity of a force or action, as heat or electricity. It is particularly used to render such a force or action appreciable or measurable when feeble. See Thermomultiplier.
Source: Webster's dictionaryPerpetual optimism is a force multiplier. Colin Powell
The multiplier effect is a major feature of networks and flows. It arises regardless of the particular nature of the resource, be it goods, money, or messages. John Henry Holland
Talent is the multiplier. The more energy and attention you invest in it, the greater the yield. The time you spend with your best is, quite simply, your most productive time. Marcus Buckingham
Don't accept that you can't make a difference. Because if you can't make a difference, you won't make a difference, and if you put a multiplier on that we will continue on an unsustainable pathway. Maurice Strong
Trust is a great force multiplier. Tom Ridge
“206,876 vouchers were redeemed in Gozitan outlets and accommodation facilities by the beginning of September, an amount which, including its multiplier effect, signifies an economic injection of €5.2 million.” Source: Internet