nonporous

porous

[pawr-uhs, pohr-]
adjective
1.
full of pores.
2.
permeable by water, air, etc.

Origin:
1350–1400; Middle English, variant of porose < Medieval Latin porōsus. See pore2, -ous

porously, adverb
porousness, noun
nonporous, adjective
nonporousness, noun
unporous, adjective
unporousness, noun


2. penetrable, pervious, sievelike, riddled.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
nonporous (nɒnˈpɔːrəs)
 
adj
not permeable to water, air, or other fluids

porous (ˈpɔːrəs)
 
adj
1.  permeable to water, air, or other fluids
2.  biology, geology having pores; poriferous
3.  easy to cross or penetrate: the porous border into Thailand; the most porous defence in the league
 
[C14: from Medieval Latin porōsus, from Late Latin poruspore²]
 
'porously
 
adv
 
'porousness
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

porous
late 14c., "full of pores," from M.Fr. poreux (14c.), M.L. porosus, from L. porus "opening" (see pore (n.)).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

porous po·rous (pôr'əs)
adj.

  1. Full of or having pores.

  2. Admitting the passage of gas or liquid through pores.


po'rous·ness n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
porous   (pôr'əs)  Pronunciation Key 
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 © 2002. Published by Houghton Mifflin. All rights reserved.
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