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单词 precursor
释义 pre·cur·sor
\ ̷ ̷ˈkərsər, -ˈkə̄sə(r, -ˈkəisə(r, ˈprēˌ ̷ ̷ ̷ ̷\ noun
(-s)
Etymology: Latin praecursor, from praecursus + -or
1.
 a. : one that precedes and indicates the approach of another
  < headaches … were the precursors of breakdown and helpless invalidism — V.S.Pritchett >
 b. : one that precedes another in an office or process : predecessor, forerunner
  < Greek mathematics was the precursor to modern mathematics — Harry Lass >
2. : a substance from which another substance is formed especially by natural processes
 < ethyl alcohol is the precursor of acetic acid in the formation of vinegar >
— compare provitamin, zymogen
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更新时间:2025/3/18 7:20:34