TRITICEUM

\tɹˈa͡ɪta͡ɪsˌiːəm], \tɹˈa‍ɪta‍ɪsˌiːəm], \t_ɹ_ˈaɪ_t_aɪ_s_ˌiː__ə_m]\
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1898 - American pocket medical dictionary
By Willam Alexander Newman Dorland