nonporous

N1O1N1P3O1R1O1U1S1

adjective

Having no pores, not penetrable, impervious.

“The plastic was a nonporous surface, so the ink couldn't sink in and stain it.”

Opposite
porous
UncommonScrabble 11
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Meanings

adjectivenonporous (not comparable)
  1. not comparableHaving no pores, not penetrable, impervious.

    The plastic was a nonporous surface, so the ink couldn't sink in and stain it.

    1 more example

    Was it for some kind of science experiment about osmosis or nonporous surfaces?

    2017, James Patterson and Chris Grabenstein, Pottymouth and Stoopid, page 70

Synonyms & antonyms

adjectivenot porous; especially not having vessels that appear as pores

Opposite
porous
Also see
unporous

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

From non- + porous.

Full word history & related roots →
Cite this entry
APA

nonporous. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/nonporous

MLA

“nonporous.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/nonporous. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “nonporous,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/nonporous.

Source: nonporous on Wiktionary, CC BY-SA 4.0.