1. Plural of annulus; ring-shaped objects or geometric figures with a circular hole in the center.
Usage: Most common in mathematics and geometry contexts.; Also used in astronomy, engineering, and physics.

Examples

• The mathematician calculated the area of several annuluses with different radii.
• Saturn's annuluses are composed of ice and rock particles.
• The engineer designed the bearing using multiple annuluses to reduce friction.
• In the diagram, three annuluses were drawn with increasing diameters.
• The solar eclipse created an annulus effect, and multiple annuluses were observed in the historical records.
• The architect incorporated decorative annuluses into the column design.