Noun
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a medicine that strengthens and invigorates
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(music) the first note of a diatonic scale
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a sweet drink containing carbonated water and flavoring
"in New England they call sodas tonics"
- soda pop - soda water -
lime- or lemon-flavored carbonated water containing quinine
- tonic water - quinine water
Adjective
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imparting vitality and energy
"the bracing mountain air"
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relating to or being the keynote of a major or minor scale
"tonic harmony"
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used of syllables
"a tonic syllables carries the main stress in a word"
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employing variations in pitch to distinguish meanings of otherwise similar words
"Chinese is a tonal language"
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of or relating to or producing normal tone or tonus in muscles or tissue
"a tonic reflex"
"tonic muscle contraction"