Definition of


  1. (noun, artifact) an electronic amplification system used as a communication system in public areas
  2. (noun, location) a Mid-Atlantic state; one of the original 13 colonies
  3. (noun, person) an informal term for a father; probably derived from baby talk
  4. (noun, quantity) a unit of pressure equal to one newton per square meter
  5. (noun, substance) a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead

via WordNet, Princeton University

Origin of the word Pa

  1. 1811, colloquial shortening of papa (q.v.). more

via Online Etymology Dictionary, ©2001 Douglas Harper

Note: If you're looking to improve your vocabulary right now, we highly recommend Ultimate Vocabulary Software.

Word of the Moment

The Star-spangled Banner

a poem written by Francis Scott Key during the War of 1812 was set to music and adopted by Congress in 1931 as the national anthem of the United States