| Each of the openings has a substantially triangular shape, trapezoidal or semicircular shape. |
| The inner ear includes the cochlea, the hearing organ, and the semicircular canals and otolith organs, the sense organs of balance. |
| A large convex molding, semicircular in cross section, located at the base of a classical column. |
| The walls had rounded angles with semicircular projecting bastions for artillery with an entrance on the south side. |
| The configuration is circular, with showcases arranged along two semicircular walls with an opening in the center. |
| A small, semicircular tunnel with two entrances had been weathered out of the soft rock. |
