tonic

adjective

  1. 1

    imparting vitality and energy

    the bracing mountain air

  2. 2

    used of syllables

    a tonic syllables carries the main stress in a word

  3. 3

    relating to or being the keynote of a major or minor scale

    tonic harmony

  4. 4

    employing variations in pitch to distinguish meanings of otherwise similar words

    Chinese is a tonal language

  5. 5

    of or relating to or producing normal tone or tonus in muscles or tissue

    a tonic reflex

    tonic muscle contraction

noun

  1. 1

    a medicine that strengthens and invigorates

  2. 2

    (music) the first note of a diatonic scale

  3. 3

    a sweet drink containing carbonated water and flavoring

    in New England they call sodas tonics

  4. 4

    lime- or lemon-flavored carbonated water containing quinine

Synonyms

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