porous

[ pawr-uhs, pohr- ]
/ ˈpɔr əs, ˈpoʊr- /

adjective

full of pores.
permeable by water, air, etc.

QUIZZES

FOR POSTERITY’S SAKE, TAKE THIS WORD OF THE DAY QUIZ!

Are words your bailiwick? Take the latest quiz on the words from July 6 to July 12 to find out.
Question 1 of 7
bailiwick

Origin of porous

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

OTHER WORDS FROM porous

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for nonporous

British Dictionary definitions for nonporous (1 of 2)

nonporous
/ (nɒnˈpɔːrəs) /

adjective

not permeable to water, air, or other fluids

British Dictionary definitions for nonporous (2 of 2)

porous
/ (ˈpɔːrəs) /

adjective

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

Derived forms of porous

porously, adverbporousness, noun

Word Origin for porous

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

Medical definitions for nonporous

porous
[ pôrəs ]

adj.

Full of or having pores.
Admitting the passage of gas or liquid through pores.

Other words from porous

porous•ness n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for nonporous

porous
[ pôrəs ]

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.