We couldn't find a direct definition for the term p.a.
Maybe you were looking for one of these terms?
p. g. wodehouse, p. o, p. p. von mauser, p. p., clerk of this parish, p. t. barnum, p.a., p.a. system, p.a.u., p.b.a., p.c.
... or search for p.a inside other dictionary definitions.