[pawr-uh s, pohr-]
- full of pores.
- permeable by water, air, etc.
Origin of porous
SynonymsSee more synonyms on Thesaurus.com
2. penetrable, pervious, sievelike, riddled.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for nonporous
A porous separator allows more energy to be drawn from the battery than a nonporous one.
When a wooden case is used, jars made of rubber, or some other nonporous, acid-resisting material are necessary.
When the skin is ready to apply, coat this plaster cast with some nonporous modelling material.Home Taxidermy for Pleasure and Profit
Albert B. Farnham
- not permeable to water, air, or other fluids
- 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
C14: from Medieval Latin porōsus, from Late Latin porus pore ²
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for nonporous
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.
Online Etymology Dictionary, © 2010 Douglas Harper
- Full of or having pores.
- Admitting the passage of gas or liquid through pores.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- Having many pores or other small spaces that can hold a gas or liquid or allow it to pass through.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.