power amplifier

noun Electricity.

an amplifier for increasing the power of a signal.

Origin of power amplifier

First recorded in 1915–20

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for power amplifier

power amplifier

noun

electronics an amplifier that is usually the final amplification stage in a device and is designed to give the required power output

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012