PA-

1.〈口,儿〉爸

2.【女名】女子名

1.【化】(=protactinium)镤

2.〈美〉同“Petroleum Administration”

1.personal assistant: someone whose job is to help a manager by writing business letters, organizing meetings, etc.

2.public address system: a set of electrical equipment that makes sounds louder, used especially for making announcements to a group of people or for playing music in a public place

1.[Chemistry](=protactinium)

2.Same as Petroleum Administration

1.Pennsylvania