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International bureau of weights and measures

international organization established by the Metre Convention

Pronunciation
/ɪntəˈnaʃənəl ˈbjʊərəʊ əv weɪts ənd ˈmɛʒəz/
/ˌɪntərˈnæʃənəl ˈbjʊroʊ əv weɪts ænd ˈmɛʒərz/