gradate

英 [grə'deɪt] 美 ['gredet]
  • vt. 使逐渐转化；使顺次排列
  • vi. 逐渐转化；顺次排列
gradate
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英语词源

gradate (v.)
"pass by imperceptible degrees," 1753, back-formation from gradation. Related: Gradated; gradating.