The Probert Encyclopaedia of Architecture

ZIGGURAT

The ziggurat was an ancient Mesopotamian brick-built temple tower. Ziggurats were constructed of rectangular units of diminishing size, generally with a shrine for the god on top. They existed in every major Sumerian, Babylonian, and Assyrian centre.
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ZIGZAG

In architecture, a zigzag is a moulding running in a zigzag line usually formed of a chevron, or series of chevrons.
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