rõngas

Rõngas is an Estonian noun meaning ring. It denotes any object that is circular in shape or forms a circular band, typically with a hollow center. The word is used for a wide range of forms, such as metal hoops, plastic rings, or circular bands that encircle or connect other parts. It can also refer to abstract geometric shapes, such as the outline of a circle or a circular region.

In everyday Estonian, many ring-shaped objects are described as rõngas. For a finger ring, the standard term is sõrmus, not rõngas.

In technical and scientific contexts, rõngas can describe ring-shaped components used in machinery, seals, or fastening systems, depending on the context. The term also appears in mathematics, where rõngas denotes the algebraic structure known in English as a ring, consisting of a set equipped with two binary operations (addition and multiplication) satisfying the ring axioms.

Thus, rõngas is a general term for anything ring-shaped or circular, with more specific terms chosen as needed to convey precise meaning in particular domains.