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Term Definition
Exterior Plywood. A general term for plywood bonded with a type of adhesive that is highly resistant to weather, water (cold, hot, and boiling), micro-organisms, steam, and dry heat.  
Exterior Tile. Tile installed in exterior applications.  
Exterior Veneer. A veneer applied to weather-exposed surfaces.  
Exterior Wall. Any outer wall serving as a vertical enclosure of a building other than a party wall.  
Exterior Wood Door Trim. Finish components of wood such as moldings applied around openings of exterior doors.  
Exterior Wood Trim. Finish components of wood such as moldings applied around openings and intersections at exterior locations.  
Exterior Wood Window Trim. Finish components of wood such as moldings applied around openings of windows.  
External Drive. Term used to indicate a compressor driven directly from the shaft or by a belt using an external motor; compressor and motor are serviceable separately.  
External Equalizer. Tube connected to low-pressure side of a thermostatic expansion valve diaphragm and to exit end of evaporator.  
External Vibrator. Vibrating device attached to formwork to consolidate fresh concrete; used primarily in precast construction.  
Extinguisher, Fire. see Fire Extinguisher.  
Extra Work. Work performed by a contractor that is not included within the scope of the work defined by the contract documents.  
Extract. 1. To remove with effort. 2. To separate from a mixture by a physical or chemical process. 3. To separate a metal from its ore. 4. To calculate the mathematical root of a number. 5. A concentrated product.  
Extraction. Obtaining a useful substance from a raw material; obtaining of a natural resource from the earth.  
Extractive Bleeding. stains on the surface of wood caused by extractives being leached out by water or moisture.  
Extractive. substances in wood, not an integral part of the cellular structure, that can be removed by solution in hot or cold water, ether, benzene, or other solvents that do not react chemically with wood components.  
Extractor. A laundry appliance that removes the free water from washed fabrics by high speed centrifugal spinning, leaving them damp and ready for hot air tumble drying.  
Extrados. The exterior curve in an arch or vault.  
Extraordinary Flood. A deluge of greater volume than is expected in a certain place by prudent persons based on historic experience.  
Extrapolate. Calculate approximate information beyond known values by projecting the trend.  
Extruded Tile. A tile or trim unit that is formed when plastic clay mixtures are forced through a pug mill die of suitable configuration, resulting in a continuous ribbon of formed clay; a wire cutter or similar cut-off device is then used to cut the ribbon into appropriate lengths and widths of tile.  
Extrusion. The process of squeezing a material through a shaped orifice to produce a linear element with the desired cross section; an element produced by this process.  
Eye. 1. Oculus. 2. An area in the center of a tropical cyclone marked by only light winds or complete calm with no rain. 3. A metal ring through which a rope or rod is passed. 4. A loop to receive a hook.  
Eyebolt, Forged. A heavy metal bolt which contains an eye at its end which may be used as a fastening device.  
Eyebrow. A small roofed projection from a building.  

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