| / English Dictionary |
POROUS
| Pronunciation (US): |  | (GB): | |
I. (adjective)
Sense 1
Meaning:
Full of pores or vessels or holes
Synonyms:
poriferous; porous
Classified under:
Similar:
porose (forming a continuous series of pores)
Antonym:
nonporous (not porous; especially not having vessels that appear as pores)
Derivation:
pore (any small opening in the skin or outer surface of an animal)
porosity (the property of being porous; being able to absorb fluids)
Sense 2
Meaning:
Allowing passage in and out
Example:
our unfenced and largely unpoliced border inevitably has been very porous
Synonyms:
holey; porous
Classified under:
Similar:
leaky (permitting the unwanted passage of fluids or gases)
Derivation:
pore (any tiny hole admitting passage of a liquid (fluid or gas))
Sense 3
Meaning:
Able to absorb fluids
Example:
compacting the soil to make it less porous
Classified under:
Adjectives
Similar:
permeable (allowing fluids or gases to pass or diffuse through)
Derivation:
porosity; porousness (the property of being porous; being able to absorb fluids)
Context examples:
A solid composed of a porous, interlacing, absorbent, usually shape retaining material that contains active and/or inert ingredient(s).
(Medicated Sponge Dosage Form, NCI Thesaurus)
Any of a diverse group of techniques used to separate mixtures of substances based on differences in the relative affinities of the substances for two different media, one (the mobile phase) a moving fluid and the other (the stationary phase or sorbent) a porous solid or gel or a liquid coated on a solid support.
(Chromatography, NLM, Medical Subject Headings)
Scientists also found the moon surfaces to be highly porous, further confirming that they were formed in multiple stages as ring material settled onto denser cores that might be remnants of a larger object that broke apart.
(NASA's Cassini Finds Saturn's Rings Coat Tiny Moons, NASA)
Hydrocarbons appear to be flowing underneath Titan's surface similar to the way water flows through underground porous rock or gravel on Earth, so that nearby lakes communicate with each other and share a common liquid level.
(Cassini Finds Saturn Moon Has 'Sea Level' Like Earth, NASA)
Designed as a fluid at room temperature that solidifies at body temperature, these new biomaterials form a stable, porous scaffold when injected that rapidly integrates into the surrounding tissue with minimal inflammation and promotes the formation of blood vessels.
(Biomaterial Artificial Protein Helps Heal Tissue, The Titi Tudorancea Bulletin)
Powerful hydrothermal vents mix up material from the moon's water-filled, porous core with water from the moon's massive subsurface ocean - and it is released into space, in the form of water vapor and ice grains.
(Complex Organics Bubble up from Enceladus, NASA)
CETEM researcher Marisa Bezerra Monte told Agência Brasil on Monday (Apr. 7) that they have produced a zeolite concentrate (a porous multimineral mix) and changed the surface properties of its particles to enable nutrient exchanges.
(New Brazilian fertilizer can boost productivity, Agência BRASIL)
Heat from friction could power hydrothermal activity on Saturn's moon Enceladus for billions of years if the moon has a highly porous core, according to a new modeling study by European and U.S. researchers working on NASA's Cassini mission.
(Powering Saturn's Active Ocean Moon, NASA)
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