BOTAL FORAMEN
\bˈə͡ʊtə͡l fˈɔːɹe͡ɪmˌɛn], \bˈəʊtəl fˈɔːɹeɪmˌɛn], \b_ˈəʊ_t_əl f_ˈɔː_ɹ_eɪ_m_ˌɛ_n]\
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A large opening which exists in the foetus in the partition between the two auricles of the heart; and by means of which the blood passes from one to the other. Its discovery is generally attributed to Leonard Botallus, Botal, or Botalli, who wrote in 1562. It was spoken of, however, by Vesalius, and even by Galen.
By Robley Dunglison
