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riser |
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riser 1. the vertical part of a stair or step 2. a vertical pipe, esp one within a building riser [′rīz·ər] (chemical engineering) That portion of a bubble-cap assembly in a distillation tower that channels the rising vapor and causes it to flow downward to pass through the liquid held on the bubble plate. (civil engineering) A board placed vertically beneath the tread of a step in a staircase. A vertical steam, water, or gas pipe. (geology) A steplike topographic feature, such as a steep slope between terraces. (metallurgy) (petroleum engineering) In an offshore drilling facility, a system of piping extending from the hole and terminating at the rig. (textiles) A raised spot in a weaving pattern where the warp traverses the weft or the filling. 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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| Always the earliest riser among the ladies of the house, Miss Garth was alo ne in the breakfast-room when the letter was brought in. The age of this gentleman of ours was bordering on fifty; he was of a hardy habit, spare, gaunt-featured, a very early riser and a great sportsman. But he's a very early riser, and I dare say he's in the Library already. |
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