OBTUSE ANGLE

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