Recent Examples on the WebThat’s right—the key to losing inches off your waistline lies within a petite Parisian, fond of magenta lipstick and headbands, whose unique rémodelage technique is said to reshape silhouettes, reduce cellulite, boost tonicity, and release toxins. Zoe Ruffner, Vogue, 27 June 2017
Word History
First Known Use
1824, in the meaning defined at sense 1
Medical Definition
tonicity
noun
to·nic·i·ty tō-ˈnis-ət-ē
plural tonicities
1
: the property of possessing tone
especially: healthy vigor of body or mind
2
: tonussense 2
3
: the osmotic pressure of a solution
the cells swell and shrink with changing tonicity of the environment