Tonic



GRE 蓝宝

解释

GRE 红宝书

• n.增进; 滋补品
• ［英］ n.增进; 滋补品 ( an agent that increases body tone)

Webster Collegiate

I. adjective

• Etymology: Greek tonikos, from tonos tension, tone
• Date: 1649
• 1.
  • a. characterized by tonus <tonic contraction of muscle>; also marked by prolonged muscular contraction <tonic convulsions>
  • b. producing or adapted to produce healthy muscular condition and reaction of organs (as muscles)
• 2.
  • a. increasing or restoring physical or mental tone ; refreshing
  • b. yielding a tonic substance
• 3. relating to or based on the first tone of a scale <tonic harmony>
• 4. of a syllable bearing a principal stress or accent
• 5. of or relating to speech tones or to languages using them to distinguish words otherwise identical
• ? tonically adverb

II. noun

• Date: 1797
• 1. the first tone of a major or minor scale ; keynote
• 2.
  • a. an agent (as a drug) that increases body tone
  • b. one that invigorates, restores, refreshes, or stimulates <a day in the country was a tonic for him>
  • c. a liquid preparation for the scalp or hair
  • d. chiefly New England a carbonated flavored beverage
  • e. tonic water
• 3. a voiced sound

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