- full of pores.
- permeable by water, air, etc.
Origin of porous
SynonymsSee more synonyms on Thesaurus.com
Examples from the Web for porous
Our porous borders are seen as a midterm election play-to-the-base appeal instead of a problem to be solved.Border Kids Crisis—Impotent Congress
July 10, 2014
The Brazilian defense, touted as impenetrable in pre-tournament hype, proved to be bedraggled, and porous.Brazil Slips Past Croatia, Thanks to Yuichi Nishimura
June 12, 2014
“The world is porous and full of holes…so you just find the cracks,” Austin says slyly.A Most Illegal Adventure with New York City’s Wildest Underground Event Planners
December 16, 2013
Among the biggest problems is the porous border Afghanistan shares with Pakistan.David Sanger’s ‘Confront and Conceal’: 5 Revelations in Obama’s Wars
June 6, 2012
Their house, which has never been painted, is sagging and rotted and porous.American Dreams: ‘Tobacco Road’ by Erskine Caldwell
April 30, 2012
The soft layers are porous, and permit the diffusion of the acid from plate to plate.The Automobile Storage Battery
O. A. Witte
Hanging from one of the sticks that supported the tent was a porous jar of water.At Aboukir and Acre
George Alfred Henty
Papillate -us: a surface with small elevations which are porous at tip.Explanation of Terms Used in Entomology
John. B. Smith
It should be porous in a high degree—whether in winter weight or summer weight.Textiles
William H. Dooley
The vein was porous and water was constantly trickling out of it.Diggers in the Earth
Eva March Tappan
- permeable to water, air, or other fluids
- biology geology having pores; poriferous
- easy to cross or penetratethe porous border into Thailand; the most porous defence in the league
Word Origin and History for porous
late 14c., "full of pores," from Old French poros (14c., Modern French poreux), from Medieval Latin porosus; or directly from Latin porus "an opening" (see pore (n.)). Figurative use from 1640s.
- Full of or having pores.
- Admitting the passage of gas or liquid through pores.
- Having many pores or other small spaces that can hold a gas or liquid or allow it to pass through.