WordReference Random House Unabridged Dictionary of American English © 2026
pow′er am′plifier, [Elect.]
  1. Electricityan amplifier for increasing the power of a signal.
  • 1915–20

Collins Concise English Dictionary © HarperCollins Publishers::
power amplifier
  1. an amplifier that is usually the final amplification stage in a device and is designed to give the required power output
'power amplifier' also found in these entries (note: many are not synonyms or translations):
power

Forum discussions with the word(s) "power amplifier" in the title:


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