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Pa

Definition

[n] an electronic amplification system used as a communication system in public areas
[n] a Mid-Atlantic state; one of the original 13 colonies
[n] an informal term for a father; probably derived from baby talk
[n] a unit of pressure equal to one newton per square meter
[n] a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead

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