npc npa • n-ple · · · Info · Definitions · Characters · · npc · · Text Latin · · Script 3 · · Length 1 · · Syllables Definitions · · · (noun) an agency that serves as the focal point for all Intelligence Community activities related to nonproliferation of weapons of mass destruction and their missile delivery systems. Synonyms: Nonproliferation Center, NPC. · · Noun Definition 1 Characters · · c latin small letter c U+0063 n latin small letter n U+006E p latin small letter p U+0070