noun
- half of a circle; an arc of 180 degrees
- something shaped like half of a circle
Examples
- The students sat in a semicircle around the teacher.
- Draw a semicircle by marking half of a complete circle.
- The rainbow formed a perfect semicircle in the sky.
- The theater has semicircle seating for better acoustics.
- She arranged the chairs in a semicircle for the meeting.
- The protractor shows a semicircle marked with degree measurements.