|1.||a medicinal preparation intended to improve and strengthen the functioning of the body or increase the feeling of wellbeing|
|2.||anything that enlivens or strengthens: his speech was a tonic to the audience|
|3.||Also called: tonic water a mineral water, usually carbonated and containing quinine and often mixed with gin or other alcoholic drinks|
|a. the first degree of a major or minor scale and the tonal centre of a piece composed in a particular key|
|b. a key or chord based on this|
|5.||a stressed syllable in a word|
|6.||serving to enliven and invigorate: a tonic wine|
|7.||of or relating to a tone or tones|
|8.||music of or relating to the first degree of a major or minor scale|
|9.||of or denoting the general effect of colour and light and shade in a picture|
|10.||physiol of, relating to, characterized by, or affecting normal muscular or bodily tone: a tonic spasm|
|11.||of or relating to stress or the main stress in a word|
|12.||denoting a tone language|
|[C17: from New Latin tonicus, from Greek tonikos concerning tone, from tonos|
tonic ton·ic (tŏn'ĭk)
Of or producing tone or tonicity in muscles or tissue.
Characterized by continuous tension or contraction of muscles, as a convulsion or spasm.
Producing or stimulating physical, mental, or emotional vigor.