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Grade most commonly refers to: * Grade (education), a measurement of a student's performance * Grade, the number of the year a student has reached in a given educational stage *
Grade (slope) The grade (also called slope, incline, gradient, mainfall, pitch or rise) of a physical feature, landform or constructed line refers to the tangent of the angle of that surface to the horizontal. It is a special case of the slope, where zero in ...
, the steepness of a slope Grade or grading may also refer to:


Music

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Grade (music) Music examinations are a method of formally assessing the accomplishments of pupils learning musical instruments. These are called grades. Although there are music examinations available to school and university students alongside other regular q ...
, a formally assessed level of profiency in a musical instrument * Grade (band), punk rock band * Grades (producer), British electronic dance music producer and DJ


Science and technology


Biology and medicine

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Grading (tumors) In pathology, grading is a measure of the cell appearance in tumors and other neoplasms. Some pathology grading systems apply only to malignant neoplasms (cancer); others apply also to benign neoplasms. The neoplastic grading is a measure of cell ...
, a measure of the aggressiveness of a tumor in medicine *
The Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach The GRADE approach (Grading of Recommendations Assessment, Development and Evaluation) is a method of assessing the certainty in evidence (also known as quality of evidence or confidence in effect estimates) and the strength of recommendations in he ...
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Evolutionary grade A grade is a taxon united by a level of morphological or physiological complexity. The term was coined by British biologist Julian Huxley, to contrast with clade, a strictly phylogenetic unit. Definition An evolutionary grade is a group of sp ...
, a paraphyletic group of organisms


Geology

* Graded bedding, a description of the variation in grain size through a bed in a sedimentary rock * Metamorphic grade, an indicatation of the degree of metamorphism of rocks * Ore grade, a measure that describes the concentration of a valuable natural material in the surrounding ore


Engineering and technology

* Grade (fasteners), the grade of nuts and bolts refers to the strength and material *
Grade (elevation at earth level) Grade most commonly refers to: * Grade (education), a measurement of a student's performance * Grade, the number of the year a student has reached in a given educational stage * Grade (slope), the steepness of a slope Grade or grading may also ref ...
, in architectural engineering, the elevation of the earth surrounding a building * Grading (earthworks), the preparation and leveling 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 * 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 *
Grade of service In telecommunication engineering, and in particular teletraffic engineering, the quality of voice service is specified by two measures: the grade of service (GoS) and the quality of service (QoS). Grade of service is the probability of a call in a ...
, the quality of voice service in telecommunications * Color grading, the process of altering and enhancing the color of a motion picture, video image, or still image * A rating of
lumber Lumber is wood that has been processed into dimensional lumber, including beams and planks or boards, a stage in the process of wood production. Lumber is mainly used for construction framing, as well as finishing (floors, wall panels, wi ...
(timber) quality and strength


Mathematics

* Grade (angle), a unit for the measurement of plane angles * Graded (mathematics), with several meanings * Graded poset, a partially ordered set equipped with a rank function, sometimes called a ranked poset * Graded vector space, a vector space with an extra piece of structure * Graded algebra, an algebra over a field (or ring) with an extra piece of structure


Linguistics

* Grade, each of the "levels" of
vowel gradation In linguistics, apophony (also known as ablaut, (vowel) gradation, (vowel) mutation, alternation, internal modification, stem modification, stem alternation, replacive morphology, stem mutation, internal inflection etc.) is any alternation wit ...
, especially in Indo-European * Grade, or degree, one of the comparative forms of an adjective


Sport

* 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 *
Degree of difficulty Degree of difficulty (DD, sometimes called tariff or grade) is a concept used in several sports and other competitions to indicate the technical difficulty of a skill, performance, or course, often as a factor in scoring. Sports which incorporate ...
, in several sports * 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


Other uses

* Grade (crime), the degree of seriousness of a crime *
Military rank Military ranks are a system of hierarchical relationships, within armed forces, police, intelligence agencies or other institutions organized along military lines. The military rank system defines dominance, authority, and responsibility in a ...
* Grade (surname) (includes a list of people with the name) * Grade, Cornwall, a village in the UK *
Coin grading Coin grading is the process of determining the grade or condition of a coin, one of the key factors in determining its value. A coin's grade is generally determined by six criteria: strike, preservation, luster, color, attractiveness, and occasion ...
, the process of determining the grade or condition of a coin, the key factor in its value *
Food grading Food grading involves the inspection, assessment and sorting of various foods regarding quality, freshness, legal conformity and market value.Saravacos, George D.; Maroulis, Zacharias B. (2011''Food Process Engineering Operations'' CRC Press. p ...
, the inspection, assessment and sorting of foods to determine quality, freshness, legal conformity and market value * Pattern grading, the scaling of a pattern to a different size in the clothing or footwear industry


See also

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Gradient In vector calculus, the gradient of a scalar-valued differentiable function of several variables is the vector field (or vector-valued function) \nabla f whose value at a point p is the "direction and rate of fastest increase". If the gr ...
* Gradation (disambiguation) * Rank (disambiguation) * Rating (disambiguation) {{disambiguation