P.A.

I. (noun)

Meaning:

An electronic amplification system used as a communication system in public areas

Synonyms:

P.A.; P.A. system; PA; PA system; public address system

Classified under:

Nouns denoting man-made objects

Hypernyms ("P.A." is a kind of...):

communication system (a system for communicating)

Meronyms (parts of "P.A."):

amplifier (electronic equipment that increases strength of signals passing through it)

loudspeaker; loudspeaker system; speaker; speaker system; speaker unit (electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance)

tannoy (a loudspeaker)

Meaning:

By the year; every year (usually with reference to a sum of money paid or received)

Example:

we issue six volumes per annum

Synonyms:

annually; each year; p.a.; per annum; per year

Classified under:

Adverbs