Bismarck Archipelago bis·marc·karc·hipelago uncommon noun 1. a group of islands in the southwestern Pacific northeast of New Guinea; part of Papua New Guinea SynonymsBismarck Archipelago Related words Broader terms archipelago Parts MelanesiaPapua New Guinea Part of Admiralty IslandsNew BritainNew Ireland WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
