Which definition of Pa do you mean?

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