Learn English – What’s the raised part of an arch called

single-word-requeststerminology

What's that embossed or raised part of an arc or arch called? I am looking for the upper part of the shape, which is kind of raised and forms a mini circle.

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Best Answer

I don't see a "circular" bit at the top of the arch in the OP's picture.

The parts of the arch are:

  • The absolute top of the arch is the apex.
  • The curve at the top of the arch is known as the crown.
  • The point at which the curve begins is the springing or spring-line.
  • The curve between the springing and the crown is known as the haunch.
  • The inner curve of the arch is the intrados.
  • The outer curve is the extrados.
  • The arch itself is made of sections called voussoirs. So the crown and the haunch are made of a number of voussoirs.
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