Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Adjective: tonic  tó-nik
  1. Relating to or being the keynote of a major or minor scale
    "tonic harmony"
  2. Imparting vitality and energy
    "the tonic mountain air";
    - bracing, brisk, fresh, refreshing, refreshful
  3. (physiology) of or relating to or producing normal tone or tonus in muscles or tissue
    "a tonic reflex"; "tonic muscle contraction"
  4. Employing variations in pitch to distinguish meanings of otherwise similar words
    "Chinese is a tonic language";
    - tonal
  5. (used of syllables) bearing the principle stress, usually accompanied by a change in pitch
    "a tonic syllable carries the main stress in a word";
    - accented
Noun: tonic  tó-nik
  1. Lime- or lemon-flavoured carbonated water containing quinine
    - tonic water, quinine water
  2. A sweet drink containing carbonated water and flavouring
    "in New England they call sodas tonics";
    - pop [N. Amer], soda, soda pop [N. Amer], soda water
  3. (music) the first note of a diatonic scale
    - keynote
  4. A medicine that strengthens and invigorates
    - restorative

Derived forms: tonics

See also: invigorating, tonal

Type of: medicament, medication, medicinal drug, medicine, musical note, note, soft drink, tone

Antonym: atonic

Part of: gin and tonic

Encyclopedia: Tonic