A cyclic arrangement of data elements, usually including a specified entry pointer.

A tie member or chain link; tension or compression applied through the center of the ring produces bending moment, shear, and normal force on radial sections.

1. An algebraic system with two operations called multiplication and addition; the system is a commutative group relative to addition, and multiplication is associative, and is distributive with respect to addition.

2. A ring of sets is a collection of sets where the union and difference of any two members is also a member.

A closed loop of bonded atoms in a chemical structure, for example, benzene or cyclohexane.