QUADRIENNIAL

\kwˌɒdɹɪˈɛnɪəl], \kwˌɒdɹɪˈɛnɪəl], \k_w_ˌɒ_d_ɹ_ɪ__ˈɛ_n_ɪ__ə_l]\
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1919 - The Concise Standard Dictionary of the English Language
By James Champlin Fernald