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powder horn
powder keg
powder metallurgy
powder monkey
powder puff
powder room
powdery mildew
power
power amplifier
power base
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power amplifier
pow·er am·pli·fi·er (plural pow·er am·pli·fi·ers)


noun 
Definition:
 
amplifier giving required power output: an amplifier producing the required output power of a system, usually being the final amplification stage
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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