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tonicity

Definition of tonicity

What does tonicity mean?

noun

  1. the elastic tension of living muscles, arteries, etc. that facilitate response to stimuli

Alternative definition

noun

  1. [medicine] The normal presence of tone or tension in a muscle or organ; tonus
  2. [science] The ability of a solution to exert an osmotic pressure upon a membrane

Explanation

Tonicity is a measure of the osmotic pressure gradient of two solutions separated by a semipermeable membrane. It is commonly used when describing the response of cells immersed in an external solution. Like osmotic pressure, tonicity is influenced only by solutes that cannot cross the membrane, as only these exert an osmotic pressure. Solutes able to freely cross the membrane do not affect tonicity because they will always be in equal concentrations on both sides of the membrane.

Printed dictionaries and other books with definitions for tonicity

Click on a title to look inside that book (if available):

Google previewBack to Basics in Physiology (2013)

Fluids in the Renal and Cardiovascular Systems by Juan Pablo Arroyo, Adam J. Schweickert

Tonicity is the concentration of effective solutes. It is “effective osmolality.

Google previewThe American Agriculturist (1894)

Tonicity is a condition of added vigor wrought by such means as also secure the incorporation of that increase as a normal part of the vitality of the structure. Stimulation is a condition of increased activity wrought by such moans as never add to ...

Google previewe-Study Guide for: Chemistry, Cell Biology, and Genetics, Volume I by Raven, ISBN 9780073337487 (2013)

by Cram101 Textbook Reviews

Tonicity: Tonicity is a measure of the osmotic pressure gradient (as defined by the water potential of the two solutions) of two solutions separated by a semipermeable membrane. It is commonly used when describing the response of cells ...

Google previewLecture Notes: Clinical Biochemistry (2013)

by Simon W. Walker, Geoffrey J. Beckett, Peter Rae, Peter Ashby

Tonicity is a term often confused with...

Google previewe-Study Guide for: Human Physiology : From Cells to Systems by Lauralee Sherwood, ISBN 9780495391845 (2012)

by Cram101 Textbook Reviews

Tonicity is a measure of the osmotic pressure (as defined by the water potential of the two solutions) of two solutions...

Google previewe-Study Guide for: Fundamentals of Anatomy and Physiology by Martini, ISBN 9780321505712 (2012)

by Cram101 Textbook Reviews

Tonicity: Tonicity is a measure of the osmotic pressure gradient (as defined by the water potential of the twosolutions) of two solutions separated bya semipermeable membrane.It is commonly used when describing the response ofcells ...

Google previewe-Study Guide for: Biology Today and Tomorrow without Physiology by Cecie Starr, ISBN 9781133365365 (2013)

by Cram101 Textbook Reviews

Tonicity is a measure of the osmotic pressure gradient  ;...

Google previewe-Study Guide for: Anatomy & Physiology by Elaine Nicpon Marieb, ISBN 9780321616401 (2012)

by Cram101 Textbook Reviews

Tonicity: Tonicity is a measure of the osmotic pressure (as defined by the water potential of the two solutions) oftwo solutions separated by a semipermeable membrane. It is commonly used whendescribing the response of cells immersed in ...

Google previewe-Study Guide for: Campbell Biology in Focus by Lisa A. Urry, ISBN 9780321813800 (2013)

by Cram101 Textbook Reviews

Tonicity: Tonicity is a measure of the osmotic pressure gradient (as defined by the water potential of the two solutions) of two solutions separated by a semipermeable membrane. It is commonly used when describing the response of cells ...

Google previewe-Study Guide for: Biology by Eldra Solomon, ISBN 9780538741255 (2012)

by Cram101 Textbook Reviews

Tonicity: Tonicity is a measure of the osmotic pressure gradient (as defined by the water potential of the twosolutions) of two solutions separated by a semipermeable membrane. It is commonly used when describing the response of cells ...

Google previewMedical Lexicon (1874)

A Dictionary of Medical Science ... by Robley Dunglison

Tonicity ...

Google previewChambers's encyclopaedia (1883)

a dictionary of universal knowledge by David Patrick, William Geddie

TONGUES- TONICITY. TONICS— TONIC SOLFA. GOD SAVE THE QUEEN. f : f. hard everted edges, but caused little inconvenience. In July 1818, it had attained the size of a ...

Google previewEncyclopedia of Optimization

Auction algorithms; Communication network assignment problem; Directed tree networks; Dynamic traffic networks; Equilibrium networks; Evacuation networks; Financial equilibrium; Frank-Wolfe algorithm; Generalized mono- tonicity: ...

Google previewThe Linguistics Encyclopedia 3E (2009)

by Kirsten Malmkjaer

tonicity(internalstructure oftoneunits) and tone(pitch movementon thefinal tonic). Together, the systems unite syntactic, prosodicand information structure.

Google previewThe Encyclopaedia of Sports Medicine: An IOC Medical Commission Publication, The Endocrine System in Sports and Exercise (2008)

by William J. Kraemer, A. D. Rogol

If cold exposure causes an essential water diuresis then plasma tonicity should go up, but it does not. A series of studies ( Lennquist ...

Online dictionaries and encyclopedias with entries for tonicity

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Scrabble value of T1O1N1I1C3I1T1Y4

The value of this 8-letter word is 13 points. It is included in the first and second editions of the Official Scrabble Players Dictionary.

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