19 Nov 2013 Macmillan Dictionary with free audio pronunciation. Hear both British and American pronunciation. British English pronunciation and American English focused on the World Association of Girl Guides and Girl Scouts (WAGGGS) triennium World Thinking Day 2018 is completing this triennium theme, by celebrating the Impact that .. Note for facilitators: don't worry if you cannot pronounce.2 Jun 2015 1 Dec 2013 Learn how to say Triennium correctly in English with this tutorial pronunciation video. Oxford dictionary definition of the word triennium:. Definition of triennium - a specified period of three years. from tri- 'three' + annum 'year'. Pronunciation. triennium. /tr????n??m/. Word of the Day. clepsydra. How do you say triennium in English? Pronunciation of triennium found 9 audio voices for triennium. This guide will help you to understand and use the pronunciation symbols found in these dictionaries. The British pronunciations given are those of younger