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circumradius

[sur-kuh m-rey-dee-uh s]
noun, plural cir·cum·ra·di·i [sur-kuh m-rey-dee-ahy] /ˌsɜr kəmˈreɪˈdiˌaɪ/, cir·cum·ra·di·us·es. Geometry.
  1. the radius of the circle circumscribed around a triangle.
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Origin of circumradius

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018