root pressure

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root pressure

n.
Pressure exerted in the roots of a plant as the result of water entering the roots through osmosis.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

root′ pres`sure


n.
the osmotic pressure within the cells of a root system that causes water to rise to stems and leaves.
[1870–75]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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References in periodicals archive
Aortix can disrupt the harmful cardiorenal cycle in two ways: above the pump, it rests the heart by reducing aortic root pressure (afterload) resulting in increased cardiac output and decreased cardiac work; downstream, it provides increased blood flow to the kidneys resulting in increased urine output and a reduction in fluid overload.
He revealed that a prolapsed disc was causing nerve root pressure in my neck.
In maples, freeze-thaw cycles produce stem pressure, causing sap to flow, but birches pump sap based on root pressure after most of the snow has melted and the soil has adequately warmed.
Root pressure theory of sap movement and exudation: revisited
A root pressure chamber was used to stop xylem backflow by pressurizing the roots of potted grapevines.
This force produces root pressure, which in turn forces water to be extruded at the leaf tips and margins through small pores of short plants.
It has nothing to do with nerve root pressure but can occur when someone is tense, frightened, or has to sit for long periods of time under tension.
Further studies are necessary to quantify the effects of root pressure at the soil-root microenvironment, before a more definite statement can be made.
NEEDS FOR MAINTENANCE STRATEGIES Maintenance Technique Human Body Strategy Needed Parallel Reactive Large Maintenance Heart attack or stroke Maintenance Budget Preventive Periodic component By-pass or transplant Maintenance replacement surgery Predictive Monitoring of vibration, Detection of heart Maintenance heat, alignment, wear disease using EKG or debris ultrasonics Proactive Monitoring and Cholesterol and blood Maintenance correction of failing root pressure monitoring causes with diet control
Root pressure was estimated from the amount of sap collected from a detopped tiller overnight ([approximately equal to] 16 h).
cordifolia has sufficient root pressure to prevent persistence of winter embolisms into summer, and birches in general have high spring root pressure (Sperry, 1993), we assumed that birches on our sites were not carrying winter embolisms into our summer sampling period.
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