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of or relating to or producing normal tone or tonus in muscles or tissue;
"a tonic reflex"
"tonic muscle contraction"
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employing variations in pitch to distinguish meanings of otherwise similar words;
"Chinese is a tonal language"
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used of syllables;
"a tonic syllables carries the main stress in a word"
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relating to or being the keynote of a major or minor scale;
"tonic harmony"
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imparting vitality and energy;
"the bracing mountain air"