Mooliosuuden

Mooliosuuden, also known as *mullion* or *mullion window*, refers to a traditional architectural element commonly found in medieval and early modern European buildings. The term originates from the Latin *mullus*, meaning "millstone," due to the stone’s resemblance to the grinding wheel of a mill. Mooliosuuden typically describes a vertical stone or wood divider separating panes of glass in a window, often used in large, multi-pane designs.

These mullions served both functional and aesthetic purposes. Functionally, they provided structural support for the glass panes, which were often small and fragile. Aesthetically, they created intricate patterns and divisions that enhanced the visual appeal of windows, especially in Gothic and Renaissance architecture. In some cases, mooliosuuden could be decorated with carvings, tracery, or other ornamental details, adding to the building’s character.

The use of mooliosuuden declined with the advent of larger, single-pane windows in the 19th century, as advancements in glass manufacturing allowed for stronger, more expansive sheets. However, the element remains a distinctive feature in historic preservation and restoration projects, where it is often replicated to maintain architectural authenticity. Today, mooliosuuden is primarily encountered in heritage buildings, museums, and modern designs inspired by historical styles. Its presence serves as a reminder of medieval craftsmanship and the evolution of architectural techniques.