In the key of c, c is the tonic - the tonic is the first note of any scale. Students learn what is most effective and what subsequent progressions to return to the tonic are good. Tonic water is a carbonated soft drink in which quinine is dissolved.

Definition of tonic noun in oxford advanced learner's dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. A tonic is anything that makes you feel stronger, more cheerful, or more enthusiastic. Seeing marcus at that moment was a great tonic. His generous offer was a tremendous tonic for our morale. An invigorating, refreshing, or restorative agent or influence.

His generous offer was a tremendous tonic for our morale. An invigorating, refreshing, or restorative agent or influence.