Precursor



GRE 蓝宝 Barron TOEFL

解释

GRE 红宝书

• n. 先驱, 先兆
• ［英］ n. 先驱, 先兆 ( forerunner)
• ［记］ pre ( 前面) +curs ( 跑) +or -> 跑在前面的人 -> 先驱
• ［例］ Dark clouds are a precursor of rain.

Webster Collegiate

noun

• Etymology: Middle English precursoure, from Latin praecursor, from praecurrere to run before, from prae- pre- + currere to run — more at current
• Date: 15th century
• 1.
  • a. one that precedes and indicates the approach of another
  • b. predecessor
• 2. a substance, cell, or cellular component from which another substance, cell, or cellular component is formed
• Synonyms: see forerunner
• ? precursory adjective

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