Precipitate



GRE 蓝宝 Barron TOEFL

解释

GRE 红宝书

• v. 加速, 促成; adj.鲁莽的
• ［英］ v. 加速, 促成 ( to bring about abruptly) ; adj. 鲁莽的 ( exhibiting violent or unwise speed)
• ［记］ pre ( 提前) +cipit ( 落下) +ate -> 提前落下 -> 加速

Webster Collegiate

I. verb (-tated; -tating)

• Etymology: Latin praecipitatus, past participle of praecipitare, from praecipit-, praeceps
• Date: 1528
• transitive verb
  • 1.
    • a. to throw violently ; hurl <the quandaries into which the release of nuclear energy has precipitated mankind — A. B. Arons>
    • b. to throw down
  • 2. to bring about especially abruptly <precipitate a scandal that would end with his expulsion — John Cheever>
  • 3.
    • a. to cause to separate from solution or suspension
    • b. to cause (vapor) to condense and fall or deposit
• intransitive verb
  • 1.
    • a. to fall headlong
    • b. to fall or come suddenly into some condition
  • 2. to move or act precipitately
  • 3.
    • a. to separate from solution or suspension
    • b. to condense from a vapor and fall as rain or snow
• ? precipitative adjective
• ? precipitator noun

II. noun

• Etymology: New Latin praecipitatum, from Latin, neuter of praecipitatus
• Date: 1594
• 1. a substance separated from a solution or suspension by chemical or physical change usually as an insoluble amorphous or crystalline solid
• 2. a product, result, or outcome of some process or action

III. adjective

• Date: 1615
• 1.
  • a. falling, flowing, or rushing with steep descent
  • b. precipitous, steep
• 2. exhibiting violent or unwise speed
• ? precipitately adverb
• ? precipitateness noun
• Synonyms:
  • precipitate, headlong, abrupt, impetuous, sudden mean showing undue haste or unexpectedness. precipitate stresses lack of due deliberation and implies prematureness of action <the army's precipitate withdrawal>. headlong stresses rashness and lack of forethought<a headlong flight from arrest>. abrupt stresses curtness and a lack of warning or ceremony<an abrupt refusal>. impetuous stresses extreme impatience or impulsiveness<an impetuous lover proposing marriage>. sudden stresses unexpectedness and sharpness or violence of action<flew into a sudden rage>.

---