Also found in: Thesaurus, Medical, Financial, Encyclopedia, Wikipedia.
[Short for papa.]
The symbol for protactinium.
1. or Pa. Pennsylvania
2. or p.a. per annum
3. physician assistant
4. or P/A power of attorney
5. press agent
6. production assistant
7. prosecuting attorney
8. public-address system
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Switch to new thesaurus
|Noun||1.||P.A. - an electronic amplification system used as a communication system in public areas|
amplifier - electronic equipment that increases strength of signals passing through it
communication system - a system for communicating
loudspeaker, loudspeaker system, speaker system, speaker unit, speaker - electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance
tannoy - a loudspeaker
|Adv.||1.||p.a. - by the year; every year (usually with reference to a sum of money paid or received); "he earned $100,000 per annum"; "we issue six volumes per annum"|
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.