dimensional lumber

2 definitions found

dimensional lumber - Collaborative International Dictionary of English v.0.48 :

  Lumber \Lum"ber\, n. [Prob. fr. Lombard, the Lombards being the
     money lenders and pawnbrokers of the Middle Ages. A lumber
     room was, according to Trench, originally a Lombard room, or
     room where the Lombard pawnbroker stored his pledges. See
     Lombard.]
     1. A pawnbroker's shop, or room for storing articles put in
        pawn; hence, a pledge, or pawn. [Obs.]
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              They put all the little plate they had in the
              lumber, which is pawning it, till the ships came.
                                                    --Lady Murray.
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     2. Old or refuse household stuff; things cumbrous, or bulky
        and useless, or of small value.
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     3. Timber sawed or split into the form of beams, joists,
        boards, planks, staves, hoops, etc.; esp., that which is
        smaller than heavy timber. [U.S.]
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     Lumber kiln, a room in which timber or lumber is dried by
        artificial heat. [U.S.]
  
     Lumber room, a room in which unused furniture or other
        lumber is kept. [U.S.]
  
     Lumber wagon, a heavy rough wagon, without springs, used
        for general farmwork, etc.
  
     dimensional lumber, lumber, usually of pine, which is sold
        as beams or planks having a specified nominal
        cross-section, usually in inches, such a two-by-four,
        two-by-six, four-by-four, etc.
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  Dimension \Di*men"sion\, n. [L. dimensio, fr. dimensus, p. p. of
     dimetiri to measure out; di- = dis- + metiri to measure: cf.
     F. dimension. See Measure.]
     1. Measure in a single line, as length, breadth, height,
        thickness, or circumference; extension; measurement; --
        usually, in the plural, measure in length and breadth, or
        in length, breadth, and thickness; extent; size; as, the
        dimensions of a room, or of a ship; the dimensions of a
        farm, of a kingdom.
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              Gentlemen of more than ordinary dimensions. --W.
                                                    Irving.
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     Space of dimension, extension that has length but no
        breadth or thickness; a straight or curved line.
  
     Space of two dimensions, extension which has length and
        breadth, but no thickness; a plane or curved surface.
  
     Space of three dimensions, extension which has length,
        breadth, and thickness; a solid.
  
     Space of four dimensions, as imaginary kind of extension,
        which is assumed to have length, breadth, thickness, and
        also a fourth imaginary dimension. Space of five or six,
        or more dimensions is also sometimes assumed in
        mathematics.
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     2. Extent; reach; scope; importance; as, a project of large
        dimensions.
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     3. (Math.) The degree of manifoldness of a quantity; as, time
        is quantity having one dimension; volume has three
        dimensions, relative to extension.
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     4. (Alg.) A literal factor, as numbered in characterizing a
        term. The term dimensions forms with the cardinal numbers
        a phrase equivalent to degree with the ordinal; thus,
        a^2b^2c is a term of five dimensions, or of the fifth
        degree.
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     5. pl. (Phys.) The manifoldness with which the fundamental
        units of time, length, and mass are involved in
        determining the units of other physical quantities.
  
     Note: Thus, since the unit of velocity varies directly as the
           unit of length and inversely as the unit of time, the
           dimensions of velocity are said to be length [divby]
           time; the dimensions of work are mass [times]
           (length)^2 [divby] (time)^2; the dimensions of
           density are mass [divby] (length)^3.
  
     Dimensional lumber, Dimension lumber, Dimension scantling
     , or Dimension stock (Carp.), lumber for
        building, etc., cut to the sizes usually in demand, or to
        special sizes as ordered.
  
     Dimension stone, stone delivered from the quarry rough, but
        brought to such sizes as are requisite for cutting to
        dimensions given.
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