PA — ТЛУМАЧЕННЯ

PA

An electronic amplification system used as a communication system in public areas.
A Mid-Atlantic state; one of the original 13 colonies.
WordNet

Pa

A unit of pressure equal to one newton per square meter.
A short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead.
WordNet

pa

An informal term for a father; probably derived from baby talk.
WordNet
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