From BiblePortal Wikipedia

Grade [1]

Grade, n. L. gradus, a step. gradior, to step to go, rota. We observe further that the Latin gradior forms gressus, by a common change of d to s Heb. to descend.

1. A degree or rank in order or dignity, or ecclesiastical.

While questions, periods, and grades and privileges are never once formally discussed.

2. A step or degree in any ascending series as crimes of every grade.

When we come to examine the intermediate grades.