plural of grade crossing

(of a radioactive or other substance) Of a purity suitable for the manufacture of weapons. / (by extension, informal) Extreme.

(education) A gradual upward trend in grades awarded to students during the decades since the mid-20th century, reported in a number of countries and at a number of levels of schooling and sometimes offered as evidence of a decline in academic standards.

Suitable for human or animal food. / Permitted to be used with or to contact food; safe for use with or around food.

(sports, Australia, New Zealand) A second division in a sporting league or competition.

Alternative spelling of zero-grade

A level indicating a base salary (in the US applying to military and government employees).

plural of grade point

A numerical value assigned to a letter grade received in a course at a college or university, multiplied by the number of credits awarded for the course.

plural of grade sixer