ἡμικύκλιον

Etymology
Neuter form of, or from.

Noun

 * 1)  semicircle
 * 2) place for public entertainment or meeting
 * 3) semicircular seat, armchair
 * 4) semicircular dial
 * 5) semicircular base of a statue
 * 6) drum of a half-column
 * 7)  barrel vault
 * 8) theatrical machine described by
 * 1) theatrical machine described by