sem·i·cir·cle

[sem-i-sur-kuhl]
noun
1.
Also called sem·i·cir·cum·fer·ence [sem-ee-ser-kuhm-fer-uhns, -fruh] . 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; < Latin sēmicirculus. See semi-, circle

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. 2013.
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Collins
World English Dictionary
semicircle (ˈsɛmɪˌsɜːkəl) [Click for IPA pronunciation guide]
 
n
1.  a.  one half of a circle
 b.  half the circumference of a circle
2.  anything having the shape or form of half a circle
 
semicircular
 
adj
 
semi'circularly
 
adv

00:10
Semicircular is always a great word to know.
So is interrobang. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a scrap or morsel of food left at a meal.
semicircle (ˈsɛmɪˌsɜːkəl) [Click for IPA pronunciation guide]
 
n
1.  a.  one half of a circle
 b.  half the circumference of a circle
2.  anything having the shape or form of half a circle
 
semicircular
 
adj
 
semi'circularly
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

semicircle
1520s, from semi- + circle. Semicircular is attested from early 15c.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
Example sentences from the web
The car was little else than a floor with a waisthigh semicircular guard in front.
The round nose chisel is used for cutting semicircular grooves for oil ways in bearings.
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