Pa.

Collins Concise English Dictionary © HarperCollins Publishers::

Pa. abbreviation

1. Pennsylvania

WordReference Random House Learner's Dictionary of American English © 2026

PA,  an abbreviation of:

1. Pennsylvania.
2. Sound Reproduction public-address system.

Pa.,  an abbreviation of:

1. Place Names Pennsylvania.

P.A.,  an abbreviation of:

1. public-address system.

WordReference Random House Unabridged Dictionary of American English © 2026

pa  (pä, pô), n. [Informal.]

1. Informal Terms father.

• short for papa

PA, 

1. Parents' Association.
2. paying agent.
3. Pennsylvania (approved esp. for use with zip code).
4. Medicine physician's assistant.
5. press agent.
6. Sound Reproduction public-address system.

Pa, [Physics.]

1. Chemistry, Physics pascal;
   pascals.

Pa, [Symbol, Chem.]

1. protactinium.

Pa., 

1. Place Names Pennsylvania.

P.A., 

1. Parents' Association.
2. Business [Insurance.] particular average.
3. passenger agent.
4. post adjutant.
5. Law power of attorney.
6. press agent.
7. public-address system.
8. publicity agent.
9. purchasing agent.

p.a., 

1. Grammar participial adjective.
2. per annum.
3. press agent.

p.-a., 

1. Sound Reproduction public-address system.