RhymeZone: tonic definitions

Definitions of tonic:

noun: a medicine that strengthens and invigorates
noun: (music) the first note of a diatonic scale
noun: lime- or lemon-flavored carbonated water containing quinine
noun: a sweet drink containing carbonated water and flavoring
Example: "In New England they call sodas tonics"
adjective: used of syllables
Example: "A tonic syllables carries the main stress in a word"
adjective: relating to or being the keynote of a major or minor scale
Example: "Tonic harmony"
adjective: employing variations in pitch to distinguish meanings of otherwise similar words
adjective: of or relating to or producing normal tone or tonus in muscles or tissue
Example: "A tonic reflex"
adjective: imparting vitality and energy
name: A surname (very rare: popularity rank in the U.S.: #67098)