GNU Collaborative International Dictionary of English

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Found 2 definitions 

  1.       

    Boiler , n.
    1. One who boils.
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    2. A vessel in which any thing is boiled.
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      ☞ The word boiler is a generic term covering a great variety of kettles, saucepans, clothes boilers, evaporators, coppers, retorts, etc.
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    3. (Mech.) A strong metallic vessel, usually of wrought iron plates riveted together, or a composite structure variously formed, in which steam is generated for driving engines, or for heating, cooking, or other purposes.
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      ☞ The earliest steam boilers were usually spheres or sections of spheres, heated wholly from the outside. Watt used the wagon boiler (shaped like the top of a covered wagon) which is still used with low pressures. Most of the boilers in present use may be classified as plain cylinder boilers, flue boilers, sectional and tubular boilers.
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      Barrel of a boiler, the cylindrical part containing the flues. -- Boiler plate, Boiler iron, plate or rolled iron of about a quarter to a half inch in thickness, used for making boilers and tanks, for covering ships, etc. -- Cylinder boiler, one which consists of a single iron cylinder. -- Flue boilers are usually single shells containing a small number of large flues, through which the heat either passes from the fire or returns to the chimney, and sometimes containing a fire box inclosed by water. -- Locomotive boiler, a boiler which contains an inclosed fire box and a large number of small flues leading to the chimney. -- Multiflue boiler. Same as Tubular boiler, below. -- Sectional boiler, a boiler composed of a number of sections, which are usually of small capacity and similar to, and connected with, each other. By multiplication of the sections a boiler of any desired capacity can be built up. -- Tubular boiler, a boiler containing tubes which form flues, and are surrounded by the water contained in the boiler. See Illust. of Steam boiler, under Steam. -- Tubulous boiler. See under Tubulous. See Tube, n., 6, and 1st Flue.
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  2.       

    Tubular , a. [L. tubulus, dim. of tubus a tube, or pipe. See Tube.] Having the form of a tube, or pipe; consisting of a pipe; fistular; as, a tubular snout; a tubular calyx. Also, containing, or provided with, tubes.
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    Tubular boiler. See under Boiler. -- Tubular breathing (Med.), a variety of respiratory sound, heard on auscultation over the lungs in certain cases of disease, resembling that produced by the air passing through the trachea. -- Tubular bridge, a bridge in the form of a hollow trunk or tube, made of iron plates riveted together, as the Victoria bridge over the St. Lawrence, at Montreal, Canada, and the Britannia bridge over the Menai Straits. -- Tubular girder, a plate girder having two or more vertical webs with a space between them.
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