[1] : The Collaborative International Dictionary of English v.0.48

grading \grad"ing\, n.
   the act or method of arranging in or by grade, or of
   bringing, as the surface of land or a road, to the desired
   level or grade.
   1913 webster

[2] : The Collaborative International Dictionary of English v.0.48

grade \grade\, v. t. imp.  p. p. graded; p. pr.  vb. n.
   grading.
   1. to arrange in order, steps, or degrees, according to size,
      quality, rank, etc.
      1913 webster

   2. to reduce to a level, or to an evenly progressive ascent,
      as the line of a canal or road.
      1913 webster

   3. stock breeding to cross with some better breed; to
      improve the blood of.
      1913 webster
see also:
graded grading 

[3] : WordNet (r) 2.0

grading
     n 1: the act of arranging in a graduated series syn: scaling
     2: changing the ground level to a smooth horizontal or gently
        sloping surface syn: leveling
     3: evaluation of performance by assigning a grade or score;
        "what he disliked about teaching was all the grading he
        had to do" syn: marking, scoring
see also:
scaling leveling marking scoring 

[4] : Moby Thesaurus II by Grady Ward, 1.0

24 moby thesaurus words for "grading":
   analysis, arrangement, cataloging, categorization, classification,
   codification, division, filing, gradation, graduation, grouping,
   indexing, pigeonholing, placement, ranging, ranking, rating,
   shading, sorting, stratification, subdivision, tabulation,
   taxonomy, typology

Grading >> G Words
Grading, definition of term: Grading
grading_pag1.html