mosaic: Definition from Answers.com
mosaic n. A picture or decorative design made by setting small colored pieces, ... a Roman mosaic laid in AD 325 at Woodchester, Gloucestershire, England.
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Celtic knot - Information from Answers.com
... the third and fourth centuries AD and can be seen in Roman floor mosaics of that ... a Roman mosaic laid in AD 325 at Woodchester, Gloucestershire, England ...
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