Glossary o

Obsidian

Obsidian is a type of naturally-occurring glass formed as an extrusive igneous rock. more..

Opus reticulatum

Opus reticulatum (also known as reticulated work) is a form of brickwork that uses diamond-shaped bricks of tufa that are placed around a core of opus caementicium. more..

Opus sectile

Opus sectile refers to an art technique popularized in Rome where materials were cut and inlaid into walls and floors to make a picture or pattern. more..

Opus tessellatum

Opus tessellatum refers to a type of mosaic made from tesserae. more..

Organic architecture

Organic architecture is a philosophy of architecture which promotes harmony between human habitation and the natural world through design approaches so sympathetic and well integrated with its site that buildings, furnishings, and surroundings become part of a unified, interrelated composition. more..

Ottoman Turkish architecture

The most numerous and largest of mosques exist in Turkey, which obtained influence from Byzantine, Persian and Syrian-Arab designs. more..

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