Definition of tonic:
- A medicine that increases the strength, and gives vigor of action to the system.
- A tonic element or letter; a vowel or a diphthong.
- Characterized by continuous muscular contraction; as, tonic convulsions.
- Increasing strength, or the tone of the animal system; obviating the effects of debility, and restoring healthy functions.
- Of or pertaining to tension; increasing tension; hence, increasing strength; as, tonic power.
- Of or relating to tones or sounds; specifically ( Phon.), applied to, or distingshing, a speech sound made with tone unmixed and undimmed by obstruction, such sounds, namely, the vowels and diphthongs, being so called by Dr. James Rush ( 1833) " from their forming the purest and most plastic material of intonation."
- The key tone, or first tone of any scale.
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- amusement (part of speech: noun)
- remedy (part of speech: noun)
- remedial (part of speech: adjective)
- "The Glands Regulating Personality", Louis Berman, M.D..
- "The Man That Corrupted Hadleyburg and Other Stories", Mark Twain (Samuel Clemens) Last Updated: February 18, 2009.
After his death, one of the great London dailies published a column editorial about the affair, reasoning in the most solemn manner that his survival for so long a time could have been due only to the remarkable tonic properties of the American climate.- "The Charm of Ireland", Burton Egbert Stevenson.