Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym PIRN is...

PIRN is

  • Preliminary Interface Revision Notice

PIRN is also in:

Acronym Definition Searched: FMGA 75109 USAFA AP WBY SCJ NESA BZI IGRS 75Z MDP OMC 55982 NRA D