| PA | an electronic amplification system used as a communication system in public areas |
|---|---|
| PA | a Mid-Atlantic state |
| PA | an informal term for a father |
| PA | a unit of pressure equal to one newton per square meter |
| PA | a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead |
| PA | an electronic amplification system used as a communication system in public areas |
| PA | the basic unit of money in Tonga |
| PA | a metabolic acid found in yeast and liver cells |
| PA | a Chadic language spoken south of Lake Chad |
| PA | an outstanding Spanish cellist noted for his interpretation of Bach's cello suites (1876-1973) |
| PA | prolific and influential Spanish artist who lived in France (1881-1973) |
| PA | worthless or oversimplified ideas |