CIRCULAR AMPUTATION

\sˈɜːkjʊləɹ ˌampjuːtˈe͡ɪʃən], \sˈɜːkjʊləɹ ˌampjuːtˈe‍ɪʃən], \s_ˈɜː_k_j_ʊ_l_ə_ɹ ˌa_m_p_j_uː_t_ˈeɪ_ʃ_ə_n]\
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1920 - A practical medical dictionary.
By Stedman, Thomas Lathrop
 
1898 - American pocket medical dictionary
By Willam Alexander Newman Dorland