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Term Definition
Coliseum. A large sports stadium or building designed like the Roman Coliseum for public entertainments.  
Collage. An artistic composition in which various materials such as photographs, pieces of fabric, metals, and wood are arranged and glued to a backing.  
Collapse. To cave or fall in or give way; failure of a structure.  
Collar Beam. A horizontal beam near the top of a trussed rafter system attached to opposing rafters to resist their spreading; also called a Collar Tie or a Collar Beam.  
Collar Joint. The vertical mortar joint between wythes of masonry.  
Collar Tie. See Collar Beam.  
Collar. A compression ring around a small circular opening.  
Collateral. Property pledged or in the possession of a creditor to guarantee payment of an obligation by a debtor.  
Collector Efficiency. The ratio of heat energy extracted from a collector to the quantity of solar energy striking the cover expressed in percent.  
Collector Elements. Elements that serve to transmit the inertial forces with the diaphragms to members of the lateral-force- resisting systems.  
Collector Streets. Connecting roads between arterial streets, not necessarily continuous, to discourage through traffic; intersections often controlled by traffic lights; parking permitted under various conditions; pedestrian crossing controlled.  
Collector. 1. In structural analysis, a force transfer element that collects loads from a diaphragm (horizontal element) and transfers them to the shear walls (vertical element). 2. Any of a wide variety of devices (flatplate, concentrating, etc.) used to collect solar energy and convert it to heat; a Solar Collector.  
Collet. A metal band, flange, or ferrule.  
Colloid. A mixture containing ultramicroscopic particles of one substance scattered evenly throughout another; also known as a dispersion.  
Colloidal Suspension. A substance divided into fine particles which remains in permanent suspension in a liquid.  
Collusion. A secret combination or conspiracy between two or more persons having a fraudulent or deceitful purpose; the illegal practice of contractors agreeing to submit higher bids so that a chosen contractors bid will be low.  
Colonial Base. An architectural style of a board or molding used against the bottom of walls to cover the joint with the floor and to protect the walls from dents and scuffs.  
Colonial Molding. A style of molding from eighteenth century English Georgian, reproduced and incorporated into buildings in America.  
Colonnade. A set of columns occurring at regular intervals.  
Color Man. In painting, the individual, either the journeyman or contractor, who is an expert in tinting and matching colors.  
Color Pigments. Pigments such as blue, red, etc. which absorb a portion of the light which falls upon them and reflect or return to the eye certain groups of light bands which enable us to recognize various colors.  
Color Retention. When a paint product exposed to the elements shows no signs of changing color it is said to have good color retention.  
Color, Complementary. See Complementary Color.  
Color, Primary. See Primary Color.  
Color. The visual appearance of objects and light sources in terms of hue, lightness, and saturation for objects and hue, brightness, and saturation for light sources; a hue as contrasted with black, white, and gray.  
Colored Finishes. Plaster finish coats containing integrally mixed color pigments or colored aggregates.  
Colored Grout. Commercially prepared grout consisting of carefully graded aggregate, portland cement, water dispersing agents, plasticizers, and color fast pigments.  
Color-Fast. Non fading.  
Colorimeter. See Chromometer.  
Coloring Strength. The relative strength or ability of pigments to color base material which is white or light in color.  

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