1. To prepare a roadway or other land surface of uniform slope.

2. A surface prepared for the support of rails, a road, or a conduit.

3. 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 as large as 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.

1. A classification of ore according to recoverable amount of a valuable metal.

2. To sort and classify diamonds.