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< obturator

obtuse angle >

ob·tuse    (b-ts, -tys, b-) KEY 

ADJECTIVE:
ob·tus·er, ob·tus·est

1. 1. Lacking quickness of perception or intellect.
   2. Characterized by a lack of intelligence or sensitivity: an obtuse remark.
   3. Not distinctly felt: an obtuse pain.
2. 1. Not sharp, pointed, or acute in form; blunt.
   2. Having an obtuse angle: an obtuse triangle.
   3. Botany. Having a blunt or rounded tip: an obtuse leaf.

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ETYMOLOGY:
Middle English, from Old French, from Latin obtsus, past participle of obtundere, to blunt ; see obtund

OTHER FORMS:
ob·tusely(Adverb), ob·tuseness(Noun)