[ ton-ik ]
/ ˈtɒn ɪk /
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a medicine that invigorates or strengthens: a tonic of sulphur and molasses.
anything invigorating physically, mentally, or morally: His cheerful greeting was a real tonic.
Music. the first degree of the scale; the keynote.
Chiefly Eastern New England. soda pop.
Phonetics. a tonic syllable or accent.
pertaining to, maintaining, increasing, or restoring the tone or health of the body or an organ, as a medicine.
invigorating physically, mentally, or morally.
- pertaining to tension, as of the muscles.
- marked by continued muscular tension: a tonic spasm.
using differences in tone or pitch to distinguish between words that are otherwise phonemically identical: a tonic language.
pertaining to tone or accent in speech.
Phonetics. (of a syllable) bearing the principal stress or accent, usually accompanied by a change in pitch.
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Origin of tonic
regional variations of tonic
5. See soda pop.
OTHER WORDS FROM tonicton·i·cal·ly, adverban·ti·ton·ic, adjective, nounnon·ton·ic, adjectivepre·ton·ic, noun, adjective
Other definitions for tonic (2 of 2)
a combining form occurring in adjectives that correspond to nouns ending in -tonia:catatonic.
Origin of -tonic
see origin at tonic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022
How to use tonic in a sentence
British Dictionary definitions for tonic
/ (ˈtɒnɪk) /
a medicinal preparation intended to improve and strengthen the functioning of the body or increase the feeling of wellbeing
anything that enlivens or strengthenshis speech was a tonic to the audience
Also called: tonic water a mineral water, usually carbonated and containing quinine and often mixed with gin or other alcoholic drinks
- the first degree of a major or minor scale and the tonal centre of a piece composed in a particular key
- a key or chord based on this
a stressed syllable in a word
serving to enliven and invigoratea tonic wine
of or relating to a tone or tones
music of or relating to the first degree of a major or minor scale
of or denoting the general effect of colour and light and shade in a picture
physiol of, relating to, characterized by, or affecting normal muscular or bodily tonea tonic spasm
of or relating to stress or the main stress in a word
denoting a tone language
Derived forms of tonictonically, adverb
Word Origin for tonic
C17: from New Latin tonicus, from Greek tonikos concerning tone, from tonos tone
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medical definitions for tonic
[ tŏn′ĭk ]
Of or producing tone or tonicity in muscles or tissue.
Characterized by continuous tension or contraction of muscles, as a convulsion or spasm.
Producing or stimulating physical, mental, or emotional vigor.
An agent, such as a medication, that restores or increases body tone.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.