follow Dictionary.com

What's the difference between i.e. and e.g.?

impervious

[im-pur-vee-uh s] /ɪmˈpɜr vi əs/
adjective
1.
not permitting penetration or passage; impenetrable:
The coat is impervious to rain.
2.
incapable of being injured or impaired:
impervious to wear and tear.
3.
incapable of being influenced, persuaded, or affected:
impervious to reason; impervious to another's suffering.
Also, imperviable
[im-pur-vee-uh-buh l] /ɪmˈpɜr vi ə bəl/ (Show IPA)
.
Origin
1640-1650
1640-50; < Latin impervius. See im-2, pervious
Related forms
imperviously, adverb
imperviousness, noun
Can be confused
impermeable, impervious.
Synonyms
3. invulnerable, closed.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Examples from the web for imperviousness
  • If he has read these books his imperviousness to their insights is particularly impressive.
  • High-density development and imperviousness influence conditions.
  • Site development proposals are then reviewed in the context of an imperviousness cap.
  • As land uses within the watershed change from higher to lower densities, impacts from imperviousness decrease.
British Dictionary definitions for imperviousness

impervious

/ɪmˈpɜːvɪəs/
adjective
1.
not able to be penetrated, as by water, light, etc; impermeable
2.
(often postpositive) foll by to. not able to be influenced (by) or not receptive (to): impervious to argument
Derived Forms
imperviously, adverb
imperviousness, noun
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
Cite This Source
Word Origin and History for imperviousness

impervious

adj.

1640s, from Latin impervius "that cannot be passed through," from assimilated form of in- "not, opposite of" (see in- (1)) + pervius "letting things through," from per "through" + via "road." Related: Imperviously; imperviousness.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Slide the arrow to see easier and harder words for impervious
Easy Moderate Difficult

Word Value for imperviousness

0
26
Scrabble Words With Friends