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semicircumference

 - 2 dictionary results

sem⋅i⋅cir⋅cle

  [sem-i-sur-kuhl]
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–noun
1. Also called sem⋅i⋅cir⋅cum⋅fer⋅ence  [sem-ee-ser-kuhm-fer-uhns, -fruhns, sem-ahy-] . half of a circle; the arc from one end of a diameter to the other.
2. anything having or arranged in the form of a half of a circle.
Origin:
1520–30; < L sēmicirculus. See semi-, circle

Related forms:
sem⋅i⋅cir⋅cu⋅lar  [sem-i-sur-kyuh-ler] , adjective
sem⋅i⋅cir⋅cu⋅lar⋅ly, adverb
sem⋅i⋅cir⋅cu⋅lar⋅ness, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Word Origin & History

semicircle 
1526, from semi- + circle. Semicircular is attested from 1432.
Online Etymology Dictionary, © 2001 Douglas Harper
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