tonic Meaning and Definition

1. a. used of syllables

2. a. employing variations in pitch to distinguish meanings of otherwise similar words

3. a. of or relating to or producing normal tone or tonus in muscles or tissue

4. n. a medicine that strengthens and invigorates

5. n. (music) the first note of a diatonic scale

6. n. a sweet drink containing carbonated water and flavoring

7. n. lime- or lemon-flavored carbonated water containing quinine

8. s. imparting vitality and energy

9. s. relating to or being the keynote of a major or minor scale