- [adverb] 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"
Synonyms: per annum, per year, each year, annually
- [noun] an electronic amplification system used as a communication system in public areas
Synonyms: public address system, P.A. system, PA system, P.A., PA
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