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perigon

[per-i-gon]
noun
  1. an angle of 360°.
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Origin of perigon

First recorded in 1865–70; peri- + -gon
Also called round angle.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for perigon

perigon

noun
  1. an angle of 360°Also called: round angle
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Word Origin

C19: from peri- + Greek gonia angle
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012