Rácsú

Rácsú is a Hungarian adjective meaning "provided with a grille, lattice, or barred structure." It is used to describe elements that feature a protective or decorative grille, such as windows, doors, ventilation openings, or façades arranged with a grid pattern. The form derives from the noun rács, meaning grille or lattice, plus the suffix -ú, which yields an adjective meaning "having" or "characterized by."

In modern Hungarian, rácsú is most common in formal or technical written language. In everyday speech, rácsos is more frequent when referring to barred or gridded objects, though rácsú appears in standard usage in compounds like rácsú ablak (a window with a grille), rácsú kapu (a grille gate), or rácsú ajtó. The terms are understandable as synonyms in many contexts, but there can be nuance: rácsú emphasizes the presence of a specific grille pattern, while rácsos may emphasize the general "grilled" character.

Rácsú surfaces serve security, ventilation, or aesthetic purposes by allowing light and air to pass while restricting access. The concept appears in architectural descriptions, building codes, and historical discussions of protective window gratings.

See also: rács, rácsos, grille.