PLACENTAL CIRCULATION

\pləsˈɛntə͡l sˌɜːkjʊlˈe͡ɪʃən], \pləsˈɛntə‍l sˌɜːkjʊlˈe‍ɪʃən], \p_l_ə_s_ˈɛ_n_t_əl s_ˌɜː_k_j_ʊ_l_ˈeɪ_ʃ_ə_n]\
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2010 - Medical Dictionary Database
By DataStellar Co., Ltd
 
1898 - American pocket medical dictionary
By Willam Alexander Newman Dorland
 
1916 - Appleton's medical dictionary
By Smith Ely Jelliffe