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Term Definition
Fungus (pl. Fungi). Any of a major group of saprophytic and parasitic lower plants that lack chlorophyll and include molds, rusts, mildews, smuts, mushrooms, and yeasts.  
Funnel. A utensil consisting of a tube at the small end of a hollow cone; used for pouring liquids into a container with a small opening.  
Funny Papers. A disparaging term used on the jobsite in reference to the construction drawings and specifications  
Furan Grout. A two-part grout system of furan resin and furan hardener used for filling joints between quarry tile and pavers where chemical resistant properties are required; also called Furan Resin Grout.  
Furan Mortar. A two-part mortar system of furan resin and furan hardener used for bonding tile to back-up material where chemical resistance of floors is important; also called Furan Resin Mortar.  
Furan Plastics. Plastics based on resins in which the furan ring is an integral part of the polymer chain, made by the polymerization or polycondensation of furfural, furfuryl alcohol, or other compounds containing a furan ring, or by the reaction of these furan compounds with other compounds, the furan being in greater amount by weight.  
Furan Resin Grout. see Furan Grout.  
Furan Resin Mortar. see Furan Mortar.  
Furan Resin. see Furan Plastics.  
Furnace, Central Warm Air. self-contained appliance designed to supply heated air through ducts to spaces remote from or adjacent to the appliance location.  
Furnace. A unit which draws in cool air from an occupied space and passes the air through a heating chamber, combustion or electric, and then is returned to the occupied space; a heat system using air as the distribution fluid.  
Furnish. 1. To provide what is needed. 2. To supply furniture. 3. The raw materials needed for making paper pulp.  
Furnishings. Articles, especially furniture, found in the interior of a structure, generally to increase comfort or utility.  
Furred Ceiling. A ceiling having spacer elements, usually furring channels, round rods, or wood strips, interposed between it and the supporting structure above.  
Furring Channels. 3/4 inch cold or hot rolled steel channels used in plaster base construction.  
Furring, Ceiling. see Ceiling Furring.  
Furring, Channel. see Channel Furring.  
Furring, Metal. see Metal Furring.  
Furring, Wood. see Wood Furring.  
Furring. 1. Wood or metal strips used to build out a surface such as a studded wall. 2. Narrow strips fastened to the walls and ceilings to form a straight surface upon which to lay the lath or other finish.  
Furrowing. To strike a V shaped trough in a bed of mortar.  
Fuse. An electrical safety device consisting of strip of fusible metal in circuit which melts when circuit is overloaded.  
Fused Rcer. A pipe coupling with a larger size at one end that the other and is attached to a length of pipe by welding.  
Fusel Oil. Oily liquid produced in small quantities when ethyl alcohol is produced by fermentation of grain.  
Fusible Link. A safety device consisting of a metal of low melting point inserted into a machine, boiler, or linkage that will melt if the temperature rises above a certain point thereby closing or shutting off the appliance.  
Fusible Plug. Plug or fitting made with a metal of a known low- melting temperature; used as safety device to release pressure.  
Fusible Switch. An electric switch that has a fusible link in the wiring for an electric circuit to break the circuit by melting in the event of an overload.  
Fusion. 1. The liquid or plastic state of a material caused by heat. 2. In welding, the process of melting to form a union; usually the result of interaction of two or more materials.  
Fuzzing. A temporary condition on new carpet consisting of irregular fuzzing appearance caused by slack yarn twist, fibers snagging, or breaking of yarn; can be remedied by spot shearing.  

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