1510s, "degree of measurement," from French grade "grade, degree" (16c.), from Latin gradus "step, pace, gait, walk; step on a ladder or stair;" figuratively "a step, stage, degree," from gradi (past participle gressus) "to walk, step, go," from PIE *ghredh- "to walk, go" (cognates: Lithuanian gridiju "to go, wander," Old Church Slavonic gredo "to come," Old Irish in-greinn "he pursues," and second element in congress, progress, etc.). Replaced Middle English gree "step, degree in a series," from Old French grei "step," from Latin gradus.
Meaning "inclination of a road or railroad" is from 1811. Meaning "class of things having the same quality or value" is from 1807; meaning "division of a school curriculum equivalent to one year" is from 1835; that of "letter-mark indicating assessment of a student's work" is from 1886 (earlier used of numerical grades). Grade A "top quality, fit for human consumption" (originally of milk) is from a U.S. system instituted in 1912. To figuratively make the grade "be successful" is from 1912; early examples do not make clear whether the literal grade in mind was one of elevation, quality, or scholarship.
grade (v.)
1650s, "to arrange in grades," from grade (n.). Meaning "to reduce (a road, etc.) to a level or degree of inclination" is from 1835. Meaning "assign a letter mark to" is from 1931. Related: Graded; grading.
雙語例句
1. The boy first showed promise as an athlete in grade school.
這個男孩在上小學的時候就初次顯示出成為運動員的潛力。
來自柯林斯例句
2. South Point College does not grade the students' work.
南點學院不對學生的作業評分。
來自柯林斯例句
3. It was actually used for enriching uranium to weapons-grade levels.
實際上，它是用來將鈾濃縮以制造武器。
來自柯林斯例句
4. Simply sand them down with a fine grade of sandpaper.
只要用細砂紙把它們打磨一下即可。
來自柯林斯例句
5. All parts are machined from top grade, high tensile aluminium.