Dictionary and Thesaurus

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

 

Part Meronyms: Mid-Atlantic states

 

 
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