tonic

1. a. 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." Source: opted

2. a. Of or pertaining to tension; increasing tension; hence, increasing strength; as, tonic power. Source: opted

3. a. Increasing strength, or the tone of the animal system; obviating the effects of debility, and restoring healthy functions. Source: opted

4. n. A tonic element or letter; a vowel or a diphthong. Source: opted

5. n. The key tone, or first tone of any scale. Source: opted

6. n. A medicine that increases the strength, and gives vigor of action to the system. Source: opted

7. adj. of or relating to or producing normal tone or tonus in muscles or tissue Source: wordnet

8. adj. employing variations in pitch to distinguish meanings of otherwise similar words Source: wordnet

9. adj. (used of syllables) bearing the principle stress, usually accompanied by a change in pitch Source: wordnet

10. adj. relating to or being the keynote of a major or minor scale Source: wordnet

11. adj. imparting vitality and energy Source: wordnet

12. n. lime- or lemon-flavored carbonated water containing quinine Source: wordnet

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