p.a. Meaning, Definition & Usage

1. noun an electronic amplification system used as a communication system in public areas
   PA; PA system; P.A. system; public address system.
   
2. adverb by the year; every year (usually with reference to a sum of money paid or received)
   annually; each year; per year; per annum.
   
   • he earned $100,000 per annum
   • we issue six volumes per annum

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