CTENOPHORAL

\sˈiːtˈɛnəfəɹə͡l], \sˈiːtˈɛnəfəɹə‍l], \s_ˈiː_t_ˈɛ_n_ə_f_ə_ɹ_əl]\
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1920 - A dictionary of scientific terms.
By Henderson, I. F.; Henderson, W. D.
 
1920 - A dictionary of scientific terms (6th edition)
By J.H. Kenneth