PROTAGON
\pɹˈə͡ʊtəɡən], \pɹˈəʊtəɡən], \p_ɹ_ˈəʊ_t_ə_ɡ_ə_n]\
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2010
- New Age Dictionary Database
By Oddity Software
1898
- Warner's pocket medical dictionary of today.
By William R. Warner
1898
- American pocket medical dictionary
By Willam Alexander Newman Dorland