semicircular arch

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Related to semicircular arch: segmental arch
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Noun1.semicircular arch - a round arch drawn from a single centersemicircular arch - a round arch drawn from a single center
round arch - an arch formed in a continuous curve; characteristic of Roman architecture
References in classic literature ?
There was a light immediately above the semicircular arch of this opening.
Rene Javellana, SJ, described the chapel's dome and the three gates which used a Roman arch with a semicircular arch above as Romanesque or Baroque.
Much of the French doors is completed with a semicircular arch.