Extract



GRE 蓝宝 TOEFL 考研

解释

GRE 红宝书

• v. 拔出;强索
• ［英］ v. 拔出 ( take sth out with effort or by force) ; 强索 ( forcefully obtain money, information from a person)
• ［记］ ex ( 出) +tract ( 拉) -> 拉出 -> 强索

Webster Collegiate

I. transitive verb

• Etymology: Middle English, from Latin extractus, past participle of extrahere, from ex- + trahere to draw
• Date: 15th century
• 1.
  • a. to draw forth (as by research) <extract data>
  • b. to pull or take out forcibly <extracted a wisdom tooth>
  • c. to obtain by much effort from someone unwilling <extracted a confession>
• 2.
  • a. to withdraw (as a juice or fraction) by physical or chemical process
  • b. to treat with a solvent so as to remove a soluble substance
• 3. to separate (a metal) from an ore
• 4. to determine (a mathematical root) by calculation
• 5. to select (excerpts) and copy out or cite
• Synonyms: see educe
• ? extractability noun
• ? extractable adjective

II. noun

• Date: 15th century
• 1. a selection from a writing or discourse ; excerpt
• 2. a product (as an essence or concentrate) prepared by extracting; especially a solution (as in alcohol) of essential constituents of a complex material (as meat or an aromatic plant)

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