INTERNAL ANGLE

\ɪntˈɜːnə͡l ˈaŋɡə͡l], \ɪntˈɜːnə‍l ˈaŋɡə‍l], \ɪ_n_t_ˈɜː_n_əl ˈa_ŋ_ɡ_əl]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd