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pascal, Pa | a unit of pressure equal to one newton per square meter | |
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Pa, protactinium, protoactinium, atomic number 91 | a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead | |
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PA system, public address system, P.A. system, P.A., PA | an electronic amplification system used as a communication system in public areas | |
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Pennsylvania, PA, Keystone State | a Mid-Atlantic state; one of the original 13 colonies, with capital Harrisburg | |
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papa, pa, dad, daddy, pop, dada, pappa | an informal term for a father; probably derived from baby talk |