P.O.D.

P-mail | = P = | packet over air

P.O.D. /P-O-D/

[rare; sometimes `POD' without the periods] Acronym for `Piece Of Data' or `Plain Old Data' (as opposed to a code section, or a section containing mixed code and data). See also pod. The latter expansion was in use by the C++ standards committee, for which it indicated a struct or class which only contains data (as in C), distinguished from one which has a constructor and member functions. There are things which you can do with a P.O.D. which you can't with a more general class.

P-mail | = P = | packet over air