pa

noun Informal.

1. father.

Physics.

1. pascal; pascals.

Symbol, Chemistry.

1. protactinium.

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

1. Pennsylvania.

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

1. public-address system.

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

noun

1. an informal word for father

noun NZ

1. a Māori village or settlement
2. history a Māori defensive position and settlement on a hilltop
3. go back to the pa to abandon city life in favour of rural life

the internet domain name for

1. Panama

the chemical symbol for

1. protactinium

symbol for

2. pascal

abbreviation for

1. Pennsylvania
2. personal appearance
3. personal assistant
4. military Post Adjutant
5. power of attorney
6. press agent
7. Press Association
8. banking private account
9. public-address system
10. publicity agent
11. Publishers Association
12. purchasing agent
13. insurance particular average
14. (in New Zealand) probationary assistant
15. Panama (international car registration)

abbreviation for

1. Pennsylvania

abbreviation for

1. per annum

1804, colloquial shortening of papa (q.v.). n.abbreviation of “public address” (system), attested from 1936.

1. The symbol for the elementprotactinium

abbr.

1. physician’s assistant
2. posteroanterior
3. pulmonary artery

1. Abbreviation of pascal
2. The symbol for protactinium.

Pa

1. A rare, extremely toxic, radioactive metallic element of the actinide series that occurs in uranium ores. It has 13 known isotopes, the most stable of which is protactinium 231 with a half-life of 32,760 years. Atomic number 91; approximate melting point 1,550°C; specific gravity 15.37; valence 4, 5. See Periodic Table.