porous

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

adjective

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

QUIZZES

HEED THE VOX POPULI, AND TAKE THIS WORD OF THE DAY QUIZ!

Test your memory on these verbal firecrackers from the week of June 29 to July 5!
Question 1 of 7
anchorite

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 porous

British Dictionary definitions for porous

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 porous

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 porous

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.