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tonicity

American  
[toh-nis-i-tee] / toʊˈnɪs ɪ ti /

noun

  1. tonic quality or condition.

  2. the state of bodily tone.

  3. Physiology. the normal elastic tension of living muscles, arteries, etc., by which the tone of the system is maintained.

tonicity British  
/ təʊˈnɪsɪtɪ /

noun

  1. the state, condition, or quality of being tonic

  2. physiol another name for tonus

"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

Etymology

Origin of tonicity

First recorded in 1815–25; tonic + -ity

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Tonicity is a concern for all living things.

From Textbooks • Jun. 9, 2022

Tonicity describes how the extracellular concentration of solutes can change the volume of a cell by affecting osmosis, often correlating with the osmolarity of the solution, i.e., the total solute concentration of the solution.

From Textbooks • Jun. 9, 2022

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.