tonic

nouns

lime- or lemon-flavored carbonated water containing quinine
a sweet drink containing carbonated water and flavoring
"in New England they call sodas tonics"
(music) the first note of a diatonic scale
a medicine that strengthens and invigorates

adjectives

of or relating to or producing normal tone or tonus in muscles or tissue
"a tonic reflex"; "tonic muscle contraction"
is derived from
is derived from
pertains to
domain category
the branch of the biological sciences dealing with the functioning of organisms
employing variations in pitch to distinguish meanings of otherwise similar words
"Chinese is a tonal language"
is derived from
pertains to
used of syllables
"a tonic syllables carries the main stress in a word"
antonym
relating to or being the keynote of a major or minor scale
"tonic harmony"
is derived from
is similar to
having tonality; i.e. tones and chords organized in relation to one tone such as a keynote or tonic
imparting vitality and energy
"the bracing mountain air"