Brasilia bra·si·lia US/brʌˈsɪljʌ/ uncommon noun 1. the capital of Brazil; a city built on the central plateau and inaugurated in 1960 SynonymsBrazilian capitalcapital of Brazil Related words Broader terms national capital Parts Brazil WordNet 2.1 (Princeton University). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved.