Grade

From Wikipedia, the free encyclopedia

Grade may refer to:

• Grade (education), a teacher's evaluation of a student's work
• Grade level, a student's level of educational progress in school
• Grade, a sign of progression in training and experience in the Civil Air Patrol

• Grade separation, the process of aligning a junction of two or more transport axes at different heights such that they do not disrupt the flow of traffic of one another when they cross

Use in technical measurements:

• Grade (slope), the pitch of a slope such as a hill, path, or road
• Graded vector space, a vector space with an extra piece of structure
• Graded algebra, an algebra over a field (or commutative ring) with an extra piece of structure
• Ore grade, a measure that describes the concentration of a valuable natural material in the surrounding ore
• Property class, or "grades," which are certain size and strength requirements for nuts and bolts
• Grade (angle), a unit for the measurement of plane angles

Fuel grade:

• Cetane rating, a measure of diesel fuel's combustion quality
• Octane rating, the measure of the autoignition resistance of gasoline (petrol) and other fuels used in spark-ignition internal combustion engines

In Medicine:

• Grading (tumors), a measure of the aggressiveness of a tumor

Other uses:

• Grade (climbing), a climber's assessment of the difficulty and danger of climbing a route
• Grade (bouldering), a climber's assessment of the difficulty and danger of climbing a route which are distinct from those used in regular climbing

• Grade of service, the quality of voice service in telecommunications
• Grading, the scaling of a pattern to a different size in the clothing industry
• 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
• Grade (band), a punk rock band
• Evolutionary grade, a group of organisms sharing a common ancestor.

[edit] See also

• Rating