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From Wikipedia, the free encyclopedia

Grade may refer to:

In education

In civil engineering

  • Grade (slope), the pitch of a slope such as a hill, road or railway
  • Land grading, the preparation and levelling of land for construction, especially of roads and railways
  • Grade separation, aligning a junction of two or more transport axes at different heights to facilitate traffic flow.

In pure mathematics

In measurement and quality assessment and control

  • Grad (angle), also called grade, a unit for the measurement of plane angles
  • Ore grade, a measure that describes the concentration of a valuable natural material in the surrounding ore
  • Grade (fasteners), the grade of nuts and bolts refers to the strength and material
  • Cetane rating, a measure of diesel fuel's combustion quality
  • Octane rating, also called gasoline grade, the measure of the autoignition resistance of gasoline (petrol) and other fuels used in spark-ignition internal combustion engines
  • Grading (tumors), a measure of the aggressiveness of a tumor in medicine
  • Grade (climbing), a climber's assessment of the difficulty and danger of climbing a hill
  • Grade (bouldering), a climber's assessment of the difficulty and danger of climbing a route which are distinct from those used in regular climbing
  • International Scale of River Difficulty, also called grade, a standardized scale used to rate the safety of a stretch of river, or a single rapid.
  • Grade of service, the quality of voice service in telecommunications
  • Coin grading, the process of determining the grade or condition of a coin, the key factor in its value
  • Color grading, the process of altering and enhancing the color of a motion picture or television image
  • Pattern grading, the scaling of a pattern to a different size in the clothing or footwear industry

In Medicine

In the sense of rank or status


Other uses

See also


Up to date as of January 15, 2010

Definition from Wiktionary, a free dictionary

See also grade, and gradé



Grade m.

  1. Plural form of Grad.


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