pa /ˈpɑ, ˈpɔ/
飛行員助手
Pa n. A shortened form of Papa.
◄ ►
P.A.
n : an electronic amplification system used as a communication
system in public areas [syn: public address system, P.A.
system, PA system, PA]
adv : by the year; every year (usually with reference to a sum of
money paid or received); "he earned $100,000 per
annum"; "we issue six volumes per annum" [syn: per
annum, per year, each year, annually]
pa
n 1: an informal term for a father; probably derived from baby
talk [syn: dad, dada, daddy, papa, pappa, pater,
pop]
2: a short-lived radioactive metallic element formed from
uranium and disintegrating into actinium and then into
lead [syn: protactinium, protoactinium, atomic number
91]
3: a unit of pressure equal to one newton per square meter
[syn: pascal]
4: a Mid-Atlantic state; one of the original 13 colonies [syn:
Pennsylvania, Keystone State]
5: an electronic amplification system used as a communication
system in public areas [syn: public address system, P.A.
system, PA system, P.A.]