Multiplier

Multiplier is total increase in aggregate expenditures divided by the original increase in expenditures.

Definition

According to Principles of Economics by Timothy Taylor (3rd edition),

Multiplier. Total increase in aggregate expenditures divided by the original increase in expenditures.

According to Macroeconomics by Mankiw (7th edition),

Multiplier. See government-purchases multiplier, money multiplier, or tax multiplier.