What is the central rounded of a pattern or ornament, an oculus, at the summit of a dome?

What is the central rounded of a pattern or ornament, an oculus, at the summit of a dome?

• A. Fretwork
• B. Pulpitum
• C. Skylight
• D. Eyebrow

Answer: (C)

Understanding the term for a circular opening at the top of a dome and its practical function. The circular opening at the summit of a dome is called an oculus. When this opening is glazed to admit daylight into the interior, its role is that of a skylight—the roof-opening used to bring light in. So, the best match here emphasizes its roofing light-delivery function, hence skylight. The other terms refer to different features: fretwork is decorative latticework, pulpitum is a medieval church screen, and an eyebrow is a high, arched window set into a wall.

Understanding the term for a circular opening at the top of a dome and its practical function. The circular opening at the summit of a dome is called an oculus. When this opening is glazed to admit daylight into the interior, its role is that of a skylight—the roof-opening used to bring light in. So, the best match here emphasizes its roofing light-delivery function, hence skylight. The other terms refer to different features: fretwork is decorative latticework, pulpitum is a medieval church screen, and an eyebrow is a high, arched window set into a wall.