TROCHOCEPHALIA

\tɹˌə͡ʊkə͡ʊsfˈe͡ɪli͡ə], \tɹˌə‍ʊkə‍ʊsfˈe‍ɪli‍ə], \t_ɹ_ˌəʊ_k_əʊ_s_f_ˈeɪ_l_iə]\
Sort: Oldest first
 
1898 - American pocket medical dictionary
By Willam Alexander Newman Dorland
 
1916 - Appleton's medical dictionary
By Smith Ely Jelliffe