1. (

• tonic ,
• tonic_water ,
• quinine_water

) lime- or lemon-flavored carbonated water containing quinine ;

2. (

• pop ,
• soda ,
• soda_pop ,
• soda_water ,
• tonic ,

) a sweet drink containing carbonated water and flavoring; "in New England they call sodas tonics" ;

3. (

• tonic ,
• keynote

) (music) the first note of a diatonic scale ;

4. (

• tonic ,
• restorative ,

) a medicine that strengthens and invigorates ;

1. (

• tonic ,

) of or relating to or producing normal tone or tonus in muscles or tissue; "a tonic reflex"; "tonic muscle contraction" ;

2. (

• tonic ,
• tonal

) employing variations in pitch to distinguish meanings of otherwise similar words; "Chinese is a tonal language" ;

3. (

• tonic ,
• accented ,

) (used of syllables) bearing the principle stress, usually accompanied by a change in pitch; "a tonic syllables carries the main stress in a word" ;

4. (

• tonic

) relating to or being the keynote of a major or minor scale; "tonic harmony" ;

5. (

• bracing ,
• brisk ,
• fresh ,
• refreshing ,
• refreshful ,
• tonic

) imparting vitality and energy; "the bracing mountain air" ;