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obtuse

adjective (ANGLE)
 
 
/əbˈtjuːs/ US  /ɑːbˈtuːs/ specialized

Definition

(of an angle) more than 90° and less than 180° → Compare acute adjective, reflex adjectiveDescribing angles, lines and orientations obtusely
 
 
/-li/ adverb formal
obtuseness
 
 
/-nəs/ noun [U] formal
(Definition of obtuse adjective (ANGLE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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