A stage or degree in a process. A position in a scale of size, quality, or intensity: a poor grade of lumber. An accepted level or standard. A set of persons or things all falling in the same specified limits; a class. A level of academic development in an elementary, middle, or secondary school: learned fractions in the fourth grade. A group of students at such a level: The third grade has recess at 10:30. Elementary school. A number, letter, or symbol indicating a student's level of accomplishment: a passing grade in history. A military, naval, or civil service rank. The degree of inclination of a slope, road, or other surface: the steep grade of the mountain road. A slope or gradual inclination, especially of a road or railroad track: slowed the truck when he approached the grade. The level at which the ground surface meets the foundation of a building. A domestic animal produced by crossbreeding one of purebred stock with one of ordinary stock. Linguistics A degree of ablaut. To arrange in steps or degrees. To arrange in a series or according to a scale. To determine the quality of (academic work, for example); evaluate: graded the book reports. To give a grade to (a student, for example). To level or smooth to a desired or horizontal gradient: bulldozers graded the road. To gradate. To improve the quality of (livestock) by crossbreeding with purebred stock. To hold a certain rank or position. To change or progress gradually: piles of gravel that grade from coarse to fine.