FORAMEN SPINOSUM

\fˈɔːɹe͡ɪmˌɛn spˈɪnɒsəm], \fˈɔːɹe‍ɪmˌɛn spˈɪnɒsəm], \f_ˈɔː_ɹ_eɪ_m_ˌɛ_n s_p_ˈɪ_n_ɒ_s_ə_m]\
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1898 - American pocket medical dictionary
By Willam Alexander Newman Dorland
 
1916 - Appleton's medical dictionary
By Smith Ely Jelliffe