1. (a.) Of or relating to tones or sounds; specifically (Phon.), applied to, or distinguishing, a speech sound made with tone unmixed and undimmed by obstruction, such sounds, namely, the vowels and diphthongs, being so called by Dr. James Rush (1833) from their forming the purest and most plastic material Of intonation.

2. (a.) of or pertaining to tension; increasing tension; hence, increasing strength; as, tonic power.

3. (a.) Increasing strength, or the tone of the animal system; obviating the effects of debility, and restoring healthy functions.

4. (n.) A tonic element or letter; a vowel or a diphthong.

5. (n.) The key tone, or first tone of any scale.

6. (n.) A medicine that increases the strength, and gives vigor of action to the system.

accented activating activator alcoholic drink alveolar analeptic animating animative animator apical apico-alveolar apico-dental arouser articulated assimilated astringent back barytone beneficial benign beverage bilabial boost bracer bracing brisk broad cacuminal central cerebral checked cheering chromatic close consonant consonantal constitutional continuant cordial corroborant crisp crispy dental dissimilated dominant dorsal drink drinkable energizer energizing enharmonic enlivening enlivenment exhilarating exhilaration exhilarative flat fortifying fresh front frosted frosted shake glide glossal glottal good good for guttural hard health-enhancing health-preserving healthful healthy heavy high human dynamo hygeian hygienic intonated invigorating invigoration invigorative key key signature keynote labial labiodental labiovelar lateral lax life light lingual liquid liquor low major major key malt mediant mid minor monophthongal motivating force motive power muted narrow nasal nasalized occlusive open oxytone palatal palatalized pedal point pharyngeal pharyngealized phonemic phonetic phonic pick-me-up pitch pitched pop posttonic potable potation quickening reanimation recreation refection refresher refreshful refreshing refreshment regale regalement regaling reinvigoration renewal restorative retroflex revival revivescence revivescency revivification reviving roborant rounded rousing salubrious salutary sanitary semitonic semivowel shake sharp soda soda pop soda water soft soft drink sonant spark plug stimulant stimulating stimulation stimulative stimulator stimulus stopped strengthening stressed strong subdominant submediant subtonic supertonic surd syllabic tense thick throaty tisane tonal tonality tonic key tonicity tonus twangy unaccented unrounded unstressed velar viable vitalizing vitamin shot vivification vocalic vocoid voiced voiceless vowel vowellike weak wholesome wide zestful zesty