1. A male parent (also used as a term of address to your father)
   "his pa was born in Atlanta";
   - father, male parent, begetter [archaic], dad [informal], dada [informal], daddy [informal], papa [informal], pappa [informal], pop [informal], poppa [N. Amer, informal], pappy [informal], da [dialect, informal]

1. A radioactive metallic element formed from uranium and disintegrating into actinium and then into lead
   - protactinium, protoactinium [rare], atomic number 91
    
2. A unit of pressure equal to one newton per square meter
   "The tire pressure was measured in Pas";
   - pascal

1. For each year (usually referring to payments, rates, or measurements)
   "he earned $100,000 p.a.";
   - per annum, per year, each year, annually

1. An electronic amplification system used as a communication system in public areas
   "Announcements were made over the school's PA system";
   - public address system, P.A. system, PA system, P.A.
    
2. A Mid-Atlantic state; one of the original 13 colonies, with capital Harrisburg
   - Pennsylvania, Keystone State, Pa.

Sounds like: oxidant, occident, Occnt, pa, pa

Derived forms: pas, PAs, Pas

Type of: American state, communication system, metal, metallic element, parent, pressure unit

Part of: America, 'Merica, Mid-Atlantic states, the States, U.S., U.S.A., United States, United States of America, US, USA

Encyclopedia: Pa, Burkina Faso