father

Pa is busy on the telephone

the SI unit of pressure, equal to one newton per square metre (approximately 0.000145 pounds per square inch, or 9.9 × 10?⁶ atmospheres)

the chemical element of atomic number 91, a radioactive metal of the actinide series, occurring in small amounts as a product of the natural decay of uranium

pascal(s)

the chemical element protactinium

Panama (international vehicle registration)

Pennsylvania (in official postal use)

personal assistant

Press Association

public address