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| Circulate
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To move in a circle, circuit, or course and then return to the point of origin. |
| Circulating fluidized bed
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A type of furnace or reactor in which the emission of sulfur compounds is lowered by the addition of crushed limestone in the fluidized bed thus obviating the need for much of the expensive stack gas clean-up equipment. The particles are collected and recirculated, after passing through a conventional bed, and cooled by boiler internals. |
| Circulation
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Pattern of free movement around from place to place, as with air in ventilating. |
| Circumference
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The line bounding a circle, a rounded surface or an area suggesting a circle. The outer perimeter of a circle. |
| Circumscribe
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To trace a line around, encircle, or encompass an object. |
| Cistern
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Rainwater storage tank, sometimes underground. Also a rarely used term for the water closet in old fashioned bathrooms. |
| City plan
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Large scale map of an urban area detailing land use, which is essential for projecting the growth and development of the urban area. |
| Civil action
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Legal proceeding instituted, by one party, to exercise a right in a disagreement between individuals or businesses. |
| Civil court
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State court where civil disagreements are decided by a judge or jury. |
| Civil engineering
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Specialization in the design of structures; buildings, bridges, etc. |
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