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osmotic pressure

The pressure needed to prevent the passage of water or other pure solvent through a semi-permeable membrane separating the solvent from the solution. Osmotic pressure rises with an ...

osmotic pressure

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The Oxford Dictionary of Sports Science & Medicine (3 ed.)

Reference type:
Subject Reference
Current Version:
2007

... pressure The pressure needed to prevent the osmotic movement of water or another solvent though a semipermeable membrane ( see osmosis...

osmotic pressure

osmotic pressure   Quick reference

A Dictionary of Mechanical Engineering (2 ed.)

Reference type:
Subject Reference
Current Version:
2019

...osmotic pressure (Unit Pa) The pressure difference across a semipermeable membrane required to prevent osmosis...

osmotic pressure

osmotic pressure n.   Quick reference

A Dictionary of Nursing (8 ed.)

Reference type:
Subject Reference
Current Version:
2021
Subject:
Medicine and health
Length:
27 words

... pressure n. the pressure by which water is drawn into a solution through a semipermeable membrane; the more concentrated the solution, the greater its osmotic pressure...

osmotic pressure

osmotic pressure   Quick reference

A Dictionary of Zoology (5 ed.)

Reference type:
Subject Reference
Current Version:
2020
Subject:
Science and technology, Life Sciences
Length:
62 words

... pressure The pressure needed to prevent the passage of water or other pure solvent through a semi-permeable membrane separating the solvent from the solution. Osmotic pressure rises with an increase in concentration of the solution. Where two solutions of different substances or concentrations are separated by a semi-permeable membrane, the solvent will move to equalize osmotic pressure within the...

osmotic pressure

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A Dictionary of Biomedicine (2 ed.)

Reference type:
Subject Reference
Current Version:
2019

...osmotic pressure The pressure required to prevent osmosis (solvent flow) across a semipermeable membrane separating two solutions of different solute...

osmotic pressure

osmotic pressure   Quick reference

A Dictionary of Plant Sciences (4 ed.)

Reference type:
Subject Reference
Current Version:
2019
Subject:
Science and technology, Life Sciences
Length:
70 words

... pressure The pressure that is needed to prevent the passage of water or another pure solvent through a semi -permeable membrane separating the solvent from the solution. Osmotic pressure rises with an increase in concentration of the solution. Where two solutions of different substances or concentrations are separated by a semi-permeable membrane, the solvent will move to equalize osmotic pressure within the system. http://www.ausetute.com.au/osmoticp.html Tutorial on osmotic ...

osmotic pressure

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Oxford Dictionary of Biochemistry and Molecular Biology (2 ed.)

Reference type:
Subject Reference
Current Version:
2008
Subject:
Science and technology, Life Sciences
Length:
124 words

... pressure symbol : π ; the excess hydrostatic pressure that must be applied to a solution in order to reduce to zero the net flow of pure solvent into it by osmosis. The osmotic pressure of a dilute solution is equal to the pressure the solute would exert if it could exist as a gas at the same temperature, T , and the same amount‐of‐substance concentration, c ; thus it may be expressed by a relation analogous to the gas equation, i.e. ∏ = ν cRT where ν is the (average) number of particles into which one solute molecule is dissociated under the...

osmotic pressure

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A Dictionary of Psychology (4 ed.)

Reference type:
Subject Reference
Current Version:
2015

... pressure n . The pressure exerted by a solution through the motion of its molecules, measured according to the pressure required to prevent osmosis of the pure solvent into it. See also hypertonic ( 2 ) , hypotonic ( 2 ) , isotonic ( 2 ) , osmoreceptor ( 2 ) , sodium pump...

osmotic pressure

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A Dictionary of Ecology (5 ed.)

Reference type:
Subject Reference
Current Version:
2015

... pressure The pressure that is needed to prevent the passage of water or another pure solvent through a semi-permeable membrane separating the solvent from the solution. Osmotic pressure rises with an increase in concentration of the solution. Where two solutions of different substances or concentrations are separated by a semi-permeable membrane, the solvent will move to equalize osmotic pressure within the system. The concept has been largely replaced by that of water potential...

osmotic pressure

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A Dictionary of Food and Nutrition (4 ed.)

Reference type:
Subject Reference
Current Version:
2014

... pressure The pressure required to prevent the passage of water through a semi-permeable membrane ( see membrane, semi-permeable ) from a region of low concentration of solutes to one of higher concentration, by osmosis...

colloid osmotic pressure

colloid osmotic pressure   Reference library

Oxford Dictionary of Biochemistry and Molecular Biology (2 ed.)

Reference type:
Subject Reference
Current Version:
2008
Subject:
Science and technology, Life Sciences
Length:
24 words

...osmotic pressure that part of the osmotic pressure exerted by a solution that is due to dissolved colloids. See osmotic pressure (def....

osmotic pressure

osmotic pressure   Reference library

The New Oxford Dictionary for Scientific Writers and Editors (2 ed.)

Reference type:
Subject Reference
Current Version:
2009

... pressure Symbol: Π (Greek cap. pi) Abbrev.: OP The pressure required to prevent the flow of a pure solvent into a solution across a semipermeable membrane. The *SI unit is the *pascal . In biology, it was formerly used in calculations of water relations, but these are now expressed in terms of osmotic potential ( see water potential...

osmotic pressure

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New Oxford American Dictionary (3 ed.)

Reference type:
English Dictionary
Current Version:
2015
Subject:
English Dictionaries and Thesauri
Length:
67 words
osmotic pressure

osmotic pressure noun   Quick reference

Oxford Dictionary of English (3 ed.)

Reference type:
English Dictionary
Current Version:
2015
Subject:
English Dictionaries and Thesauri
Length:
66 words
osmotic pressure

osmotic pressure  

The pressure needed to prevent the passage of water or other pure solvent through a semi-permeable membrane separating the solvent from the solution. Osmotic pressure rises with an increase in ...
colloid osmotic pressure

colloid osmotic pressure  

That part of the osmotic pressure exerted by a solution that is due to dissolved colloids. See osmotic pressure (def. 1).
osmotic potential

osmotic potential  

The part of the water potential of a tissue that results from the presence of solute particles. It is equivalent to osmotic pressure in concept but opposite in sign.
osmotic coefficient

osmotic coefficient  

symbol: φm (on a molality basis) or φx (on a mole fraction basis); the ratio of the actual to the ideal osmotic pressure of a given solution at a specified ...
intracellular thirst

intracellular thirst  

A form of thirst arising from depletion of fluid within cells and triggered by osmoreceptors (2), as after ingestion of salt, which accumulates in the extracellular fluid and creates osmotic ...
Epsom salts

Epsom salts  

Reference type:
Overview Page
Magnesium sulphate, originally found in a mineral spring in Epsom, Surrey, England; acts as a laxative (see laxative, osmotic) because the osmotic pressure of the solution causes it to retain water ...

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