Impervious vs Rockfill - What's the difference?

impervious | rockfill |


As an adjective impervious

is unaffected or unable to be affected by.

As a noun rockfill is

a dam's embankment of compacted free-draining granular earth, often containing rocks, with an impervious zone.

impervious

English

Adjective

(en adjective)
  • Unaffected or unable to be affected by.
  • *
  • , title=(The Celebrity), chapter=5 , passage=Although the Celebrity was almost impervious to sarcasm, he was now beginning to exhibit visible signs of uneasiness, the consciousness dawning upon him that his eccentricity was not receiving the ovation it merited.}}
  • Preventive of any penetration; impenetrable, impermeable, particularly of water.
  • Immune to damage or effect.
  • Antonyms

    * pervious

    Derived terms

    * imperviously * imperviousness

    rockfill

    English

    Noun

  • A dam's embankment of compacted free-draining granular earth, often containing rocks, with an impervious zone.