porous

Definitions

  • WordNet 3.6
    • adj porous full of pores or vessels or holes
    • adj porous allowing passage in and out "our unfenced and largely unpoliced border inevitably has been very porous"
    • adj porous able to absorb fluids "the partly porous walls of our digestive system","compacting the soil to make it less porous"
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Webster's Revised Unabridged Dictionary
    • a Porous Full of pores; having interstices in the skin or in the substance of the body; having spiracles or passages for fluids; permeable by liquids; as, a porous skin; porous wood. "The veins of porous earth."
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Century Dictionary and Cyclopedia
    • porous Having pores; porose; pervious by means of minute interstices.
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Chambers's Twentieth Century Dictionary
    • Porous having pores: that can be penetrated by fluid
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Quotations

  • Marjorie Rosen
    Marjorie Rosen
    “Does art reflect life? In movies, yes. Because more than any other art form, films have been a mirror held up to society's porous face.”
  • George W. Crane
    George W. Crane
    “You can have such an open mind that it is too porous to hold a conviction.”

Etymology

Webster's Revised Unabridged Dictionary
Cf. F. poreux,. See Pore (n.)
Chambers's Twentieth Century Dictionary
Fr.,—L. porus—Gr. poros, a passage.

Usage

In literature:

The relations of more porous rocks to containing impervious strata also profoundly affect the flow of underground water.
"The Economic Aspect of Geology" by C. K. Leith
This is white as snow and highly porous; it might almost be a globule of whipped albumen.
"The Glow-Worm and Other Beetles" by Jean Henri Fabre
Exceedingly white, light, or porous bread shows the presence of alum.
"The Home Medical Library, Volume V (of VI)" by Various
This is of hard wood, well shellacked, and consequently non-porous.
"Respiration Calorimeters for Studying the Respiratory Exchange and Energy Transformations of Man" by Francis Gano Benedict
It is a good idea to soak the top edge of porous cups for about 1/4 in.
"How Two Boys Made Their Own Electrical Apparatus" by Thomas M. (Thomas Matthew) St. John
Filtration means to drip through a porous substance, usually cloth or paper.
"All About Coffee" by William H. Ukers
She had made herself porous to him; and her sleep had always been his opportunity.
"The Flaw in the Crystal" by May Sinclair
His father peeled him away gradually, like a porous plaster.
"The Boy Scouts Book of Stories" by Various
Your bacon fried over it will be as fine eating as a porous plaster.
"How Girls Can Help Their Country" by Juliette Low
It is brought to the city mule-back in porous jars.
"Chit-Chat; Nirvana; The Searchlight" by Mathew Joseph Holt
For the liquid passed clean through the hull as though it were a porous network instead of four-inch thick beryllium-steel.
"Pirates of the Gorm" by Nat Schachner
It requires a loose porous soil and does not thrive well in heavy clayey ground which holds much water.
"The Hawaiian Islands" by The Department of Foreign Affairs
Naked, gray porous rock everywhere.
"Astounding Stories of Super-Science April 1930" by Various
The shell is porous enough to allow air to pass through it.
"The Meaning of Evolution" by Samuel Christian Schmucker
Sandstone, being porous, may be considered a healthy foundation, and sands and gravels of all sorts are usually free from marshy land.
"Rural Hygiene" by Henry N. Ogden
Through the porous substance of these stalks the molasses or treacle slowly drained off.
"Out on the Pampas" by G. A. Henty
They are left somewhat porous.
"Earth and Sky Every Child Should Know" by Julia Ellen Rogers
The casing disappeared, and the yielding porous lining.
"Triplanetary" by Edward Elmer Smith
The established plants do best in fibry peat made porous by sand.
"Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 6" by Various
It is the chief seat of the manufacture of the porous earthenware water-bottles used all over Egypt.
"Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 1" by Various
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In poetry:

Then I felt that the black earth was porous
And rotten with worms and with bones;
And I knew that the ground that now bore us
Was cadaverous with Death's skeletons;
And I saw horrid eyes, heard sonorous
And dolorous gnashings and groans.
"Musagetes" by Madison Julius Cawein

In news:

TRI/Princeton will hold a three-day porous materials course on June 10-12, 2009.
Canada's border security system may have all the new bells and whistles but it's possibly as porous as it was 20 years ago, federal Auditor General Sheila Fraser says in her fall report.
In Porous Border, GOP Sees An Opening.
Porous Walker's single-panel cartoons (or art pieces, if you like) are outrageously un-PC and gut-bustingly funny.
Don't be fooled: Our southern border is as porous as ever.
A Porous Wall of Protection.
Portland's porous pavement a prize.
Bills' porous run defense braces for latest test: Texans running back Arian Foster.
Clay pots can also dry out from the sides due to the porous nature of the pot .
In Costa Rica, the Pacific Coast has proven just as porous.
It starts with that porous defense .
In the end, coach Mike Brown insisted he wasn't as upset with center Andrew Bynum's third-quarter ejection as he was with the Lakers' porous defense and lack of hustle during a 107-104 loss Tuesday night to the Houston Rockets.
In Follow-Up Interview, Texas TV Station Captures Firsthand Footage Of Porous US Border.
He's heard the horror stories about Golden State's history of porous defense.
If your psyche is porous enough, like mine was during the 18 years I struggled with dieting, they can also clog your soul.
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In science:

Porous glass such as Vycor is often used as a random media in experimental studies.
Bose-Einstein condensation and superfluidity of dilute Bose gas in a random potential
Dimeo et al. and Plantevin et al. used neutron scattering and a torsional oscillator to measure the elementary excitations and the superfluid transition, respectively, of 4He in porous glass.
Bose-Einstein condensation and superfluidity of dilute Bose gas in a random potential
Surprisingly, the dispersion curve in porous glass was the same as that in the bulk, which means that the disorder does not affect the elementary excitations.
Bose-Einstein condensation and superfluidity of dilute Bose gas in a random potential
Because it is difficult to formulate the random potential for the porous glass, they used a delta-functional impurity potential and analyzed their model using the Bogoliubov transformation and taking an ensemble average.
Bose-Einstein condensation and superfluidity of dilute Bose gas in a random potential
Information Geometric Classification of Porous Media Tomographic Images.
Information geometric neighbourhoods of randomness and geometry of the McKay bivariate gamma 3-manifold
Modeling a class of stochastic porous media.
Information geometric neighbourhoods of randomness and geometry of the McKay bivariate gamma 3-manifold
Experimentally, quenched randomness can be introduced via a porous random environment such as aerogel.
First order isotropic - smectic-A transition in liquid crystal-aerosil gels
We study how the disorder strength depends on the density of the porous media and demonstrate that it can increase as the density decreases.
Liquid crystals in random porous media: Disorder is stronger in low--density aerosils
In many natural and technological systems liquids are confined in random porous media.
Liquid crystals in random porous media: Disorder is stronger in low--density aerosils
Two examples are water in soil and oil in porous rocks.
Liquid crystals in random porous media: Disorder is stronger in low--density aerosils
Liquid flow in porous media involves complicated dynamical phenomena and this motivates significant research efforts.
Liquid crystals in random porous media: Disorder is stronger in low--density aerosils
Second, there are long range correlations in the structure of random porous media and these correlations can enhance the effective disorder.
Liquid crystals in random porous media: Disorder is stronger in low--density aerosils
For short length scales the structure of the porous matrix must be taken into account.
Liquid crystals in random porous media: Disorder is stronger in low--density aerosils
Hence, h(ξ ) ∼ ξ df and hr ∼ ξ df −1 , where df is the fractal dimension of the porous medium.
Liquid crystals in random porous media: Disorder is stronger in low--density aerosils
The dependence is non–trivial and the effective disorder can grow as the density of the porous media decreases.
Liquid crystals in random porous media: Disorder is stronger in low--density aerosils
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