tonic

¹ American  

[ton-ik] / ˈtɒn ɪk /

noun

1. a medicine that invigorates or strengthens.

   a tonic of sulphur and molasses.

2. anything invigorating physically, mentally, or morally.

   His cheerful greeting was a real tonic.

   Synonyms:

   pickup, bracer, restorative, stimulant

3. quinine water.

4. Music. the first degree of the scale; the keynote.

5. Chiefly Eastern New England. soda pop.

6. Phonetics. a tonic syllable or accent.

---

adjective

1. pertaining to, maintaining, increasing, or restoring the tone or health of the body or an organ, as a medicine.

2. invigorating physically, mentally, or morally.

3. Physiology, Pathology.

   1. pertaining to tension, as of the muscles.

   2. marked by continued muscular tension.

      a tonic spasm.

4. using differences in tone or pitch to distinguish between words that are otherwise phonemically identical.

   a tonic language.

5. pertaining to tone or accent in speech.

6. Phonetics. (of a syllable) bearing the principal stress or accent, usually accompanied by a change in pitch.

7. Music.

   1. of or relating to a tone or tones.

   2. pertaining to or founded on the keynote, or first tone, of a musical scale.

      a tonic chord.

-tonic ² American  

1. a combining form occurring in adjectives that correspond to nouns ending in -tonia:

   catatonic.

---

tonic British  

/ ˈtɒnɪk /

noun

1. a medicinal preparation intended to improve and strengthen the functioning of the body or increase the feeling of wellbeing

2. anything that enlivens or strengthens

   his speech was a tonic to the audience

3. Also called: tonic water.  a mineral water, usually carbonated and containing quinine and often mixed with gin or other alcoholic drinks

4. music

   1. the first degree of a major or minor scale and the tonal centre of a piece composed in a particular key

   2. a key or chord based on this

5. a stressed syllable in a word

---

adjective

1. serving to enliven and invigorate

   a tonic wine

2. of or relating to a tone or tones

3. music of or relating to the first degree of a major or minor scale

4. of or denoting the general effect of colour and light and shade in a picture

5. physiol of, relating to, characterized by, or affecting normal muscular or bodily tone

   a tonic spasm

6. of or relating to stress or the main stress in a word

7. denoting a tone language

Regionalisms

See soda pop.

Other Word Forms

• antitonic adjective
• nontonic adjective
• pretonic noun
• tonically adverb

Etymology

Origin of tonic¹

First recorded in 1640–50, tonic is from the Greek word tonikós pertaining to stretching or tones. See tone, -ic

Origin of -tonic¹

tonic

Example Sentences

But numerous online shoppers post product reviews that go further, referring to it as a tonic.

From Salon

One seller was found promoting them as a tonic for mothers who have just given birth and as a medicine for combating coughs.

From BBC

It was a good tonic for McVay, who said he became ill after it ran through his family, from his young son to his wife before it finally hit him Friday night.

From Los Angeles Times

And the Four Seasons in Riyadh has opened a tonic bar — but with no booze — that asks you to “delight in a symphony of handcrafted cocktails meticulously prepared to elevate your senses.”

From Los Angeles Times

A Federal Reserve speaker a day is keeping the selloff away and seems to be the perfect tonic for jittery markets.

From Barron's