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1. a mark or rating indicating achievement or the worth of work done, as at school
2. US and Canadian a unit of pupils of similar age or ability taught together at school
3. US and Canadian
a. a part of a railway, road, etc., that slopes upwards or downwards; inclination
b. a measure of such a slope, esp the ratio of the vertical distance between two points on the slope to the horizontal distance between them
4. a unit of angle equal to one hundredth of a right angle or 0.9 degree
a. an animal with one purebred parent and one of unknown or unimproved breeding
b. (as modifier): a grade sheep
6. at grade (of a river profile or land surface) at an equilibrium level and slope, because there is a balance between erosion and deposition
The designation of the quality of a manufactured piece of wood; also the level of the ground in relation to the building.
An individual having one parent (usually the sire) that is a purebred, and one parent a grade or scrub.
To prepare a roadway or other land surface of uniform slope.
A surface prepared for the support of rails, a road, or a conduit.
The elevation of the finished surface of an engineering project.
One of two types of television service, designated grade A and grade B, each having a specified signal strength, that of grade A being several times larger than B.
The degree of strength of a high explosive.
A stage of evolution in which a similar level of organization is reached by one or more species in the development of a structure, physiological process, or behavioral character.
The slope of the bed of a stream, or of a surface over which water flows, upon which the current can just transport its load without either eroding or depositing.
Any of the various purity standards for chemicals and chemical products that have been established for specific applications.
A unit of plane angle, equal to 0.01 right angle, or π/200 radians, or 0.9°. Also known as gon.
A classification of ore according to recoverable amount of a valuable metal.
To sort and classify diamonds.
1. The classification of materials by quality. In lumber, plywood, and building boards, the classification usually depends on the quality for one face only.
2. The ground elevation or level, contemplated or existing, at the outside walls of a building, or elsewhere on the building site.
3. Rate of rise or fall of a roadway, often expressed in feet per 100 ft, in meters per kilometer, or as a percentage, ascending grades being plus, descending minus.
4. The slope of a line of pipe with reference to the horizontal; usually expressed as the fall in a fraction of an inch per foot (or centimeters per meter) length of pipe.
5. The cut-off elevation of a pile.