TRIGONOMETRICALLY

\tɹˌɪɡənə͡ʊmˈɛtɹɪkli], \tɹˌɪɡənə‍ʊmˈɛtɹɪkli], \t_ɹ_ˌɪ_ɡ_ə_n_əʊ_m_ˈɛ_t_ɹ_ɪ_k_l_i]\
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1871 - The Cabinet Dictionary of the English Language