Homorú

Homorú is a Hungarian adjective used to describe surfaces or shapes that curve inward, toward their interior. It denotes a concave or hollow form, in contrast to domború, which describes outward-curving or convex forms. The term can apply to everyday objects, architectural features, and optical components.

In mathematics and related disciplines, homorú characterizes inward-curving geometry. A homorú surface or curve bends toward its interior, and in optics a homorú lens or mirror focuses light differently from a convex one. Conversely, a domború surface or lens bulges outward. The distinction between homorú and domború is common in technical vocabulary across engineering, design, and physics.

Applications of the concept include concave mirrors and lenses, which are used in devices such as telescopes, cameras, and corrective optics. In architecture and industrial design, inward-curving forms can influence structural behavior, aerodynamics, acoustics, and aesthetics. The precise interpretation of homorú can depend on the context, but the core idea is inward curvature rather than outward bulging.

Etymology and usage note: homorú derives from Hungarian descriptive terminology for curvature and is part of everyday and technical language in Hungary. In many scientific texts, the terms concave and convex are used alongside or in place of homorú and domború to align with international terminology.

See also: concavity, convexity, concave lens, concave mirror.