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Definition of "tonicity" [to•nic•i•ty]

  • Normal firmness or functional readiness in body tissues or organs. (noun)
  • The sustained partial contraction of resting or relaxed muscles. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "tonicity" in a sentence
  • "Evaluations from consumers selected to try the product included improvement in skin firmness, tonicity and hydration level."
  • "According to the invite, socials will arrive for a cocktail hour to sample Talika's Bust Serum, which "after six weeks, increases the bra cup size by one cup, provides an 18% lift and, in many cases, improves tonicity.""
  • "And, as a matter of fact, the proper maturation of a wine is impossible without a due amount of tartar; besides this, it develops in the wine a well-defined vigour and tonicity, which improves its taste, while it also increases its alimentary qualities."