OSTEOPTERYGIOUS

\ˌɒstɪˌɒptəɹˈɪd͡ʒəs], \ˌɒstɪˌɒptəɹˈɪd‍ʒəs], \ˌɒ_s_t_ɪ__ˌɒ_p_t_ə_ɹ_ˈɪ_dʒ_ə_s]\
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2010 - New Age Dictionary Database
By Oddity Software
 
1913 - Webster's Revised Unabridged Dictionary
By Noah Webster.