Relating to or having the structure of a hemicycle; semicircular in form or arrangement.
From 'hemicycle' plus the suffix '-ic.' This architectural and mathematical adjective has been used since the 1600s.
When architects describe a structure as hemicyclic, they're saying it has that perfect semicircular form—and because of its structural strength, the hemicyclic arch became one of the most enduring designs in human architecture.
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