- pertaining to tension, as of the muscles.
- marked by continued muscular tension: a tonic spasm.
Origin of tonic
Related formston·i·cal·ly, adverban·ti·ton·ic, adjective, nounnon·ton·ic, adjectivepre·ton·ic, noun, adjective
Regional variation note
Definition for tonic (2 of 2)
Origin of -tonic
Examples from the Web for tonic
For Feiffer, the cold isolation of the upstate New York retreat worked like a tonic.
Unfortunately, the four-time NBA All-Star was tragically known for his unofficial nickname: Vin and Tonic.
And so Europeans sweetened it, giving us so-called tonic water, the “tonic” being the antidote to malaria.
(Tonic water made today still notes “contains quinine” on the label).
The good news is that the departure of Berlusconi could be a tonic that awakens Italy from a stupor of lassitude and indifference.Italy's Troubles Are Not the Tipping Point for Global Economic Collapse|Zachary Karabell|November 10, 2011|DAILY BEAST
The fresh air and the beauty of the country acted like a tonic upon us.In Hostile Red|Joseph Altsheler
With its rarely fine atmosphere, so tonic and bracing, so free from the depressing fog of the North, it is a great sanitarium.
The downland air was as a tonic wine to every creature that breathed it.Jan|A. J. Dawson
His apprehensions had all vanished under the stimulus of that tonic atmosphere.The Secret Trails|Charles G. D. Roberts
In the one form the tonic chord was natural, that is to say, major.
British Dictionary definitions for tonic
- the first degree of a major or minor scale and the tonal centre of a piece composed in a particular key
- a key or chord based on this