PA

Noun PA has 5 senses

• pa(n = noun.person) dad, dada, daddy, papa, pappa, pop - an informal term for a father; probably derived from baby talk;
is a kind of begetter, father, male parent

• pa(n = noun.substance) atomic number 91, protactinium, protoactinium - a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead;
is a kind of metal, metallic element

• pa(n = noun.quantity) pascal - a unit of pressure equal to one newton per square meter;
is a kind of pressure unit

• pa(n = noun.location) keystone state, pennsylvania - a Mid-Atlantic state; one of the original 13 colonies;
has parts: penn, pennsylvania, university of pennsylvania, allentown, altoona, bethlehem, erie, gettysburg, capital of pennsylvania, harrisburg, chester, city of brotherly love, philadelphia, pittsburgh, alleghenies, allegheny mountains, allegheny, allegheny river, blue ridge, blue ridge mountains, lehigh river, monongahela, monongahela river, susquehanna, susquehanna river
is a kind of american state
is a part of america, the states, u.s., u.s.a., united states, united states of america, us, usa, mid-atlantic states

• pa(n = noun.artifact) p.a., p.a. system, pa system, public address system - an electronic amplification system used as a communication system in public areas;
has parts: amplifier, loudspeaker, loudspeaker system, speaker, speaker system, speaker unit, tannoy
is a kind of communication system

PA