Kingdom of Cambodia king·do·mof·cambodia uncommon noun 1. a nation in southeastern Asia; was part of Indochina under French rule until 1946 SynonymsCambodiaKingdom of CambodiaKampuchea Related words Broader terms Asian country Parts IndochinaAssociation of Southeast Asian Nations Part of Phnom PenhMekongCambodian WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.