Opus

Opus (work), a term used in ecclesiastical art to designate several species of antique mosaics or similar intermixture of colors: e.g. Opus Aglicanum ("English work"), embroidery; Opus Alexandrinum ("Alexandrian work"), an invention of the Egyptians, or, as others say, made in the time of Alexander Severus, being a kind of mosaic pavement, made of squares and circles of porphyry, colored stones, and marbles, of brass, silver, and gold; Opus Graecum ("Greek work"), mosaics; Opus intextum ("in-weaved work"), irregular masses of stone-work; Opus reticulbaturn ("netted work"), stones. arranged diagonally; Opus Teutonicun ("German work"), metal work; (pus vermiculstum ("worm-like work"), chequer work, latticed embroidery.