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cushion |
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cushion 1. the resilient felt-covered rim of a billiard table 2. short for air cushion 3. a capital, used in Byzantine, Romanesque, and Norman architecture, in the form of a bowl with a square top cushion [′ku̇sh·ən] (petroleum engineering) A volume of water, drilling fluid, or compressed gas injected into the drill pipe or tubing to control both annular and formation pressures. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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