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Porous vs Rarefy - What's the difference?

porous | rarefy |

As a adjective porous

is full of tiny pores that allow fluids or gasses to pass through.

As a verb rarefy is

to make rare, thin, porous, or less dense.

porous

English

Adjective

(en adjective)
  • Full of tiny pores that allow fluids or gasses to pass through.
  • Sponges are porous so they can filter water while trapping food.
    Concrete is porous , so water will slowly filter through it.
  • (Of legislation) full of loopholes
  • (figuratively) With many gaps.
  • * {{quote-news
  • , year=2011 , date=May 14 , author=Peter Scrivener , title=Sunderland 1 - 3 Wolverhampton , work=BBC Sport citation , page= , passage=However, Wolves porous defence opened up again to gift Sunderland a foothold in the game - Sessegnon sweeping in a Zenden corner that was inexplicably allowed to bounce in the six-yard box. }}

    Synonyms

    * (full of holes ): permeable

    rarefy

    English

    Alternative forms

    * rarify

    Verb

    (en-verb)
  • To make rare, thin, porous, or less dense
  • To expand or enlarge without adding any new portion of matter to.
  • Synonyms

    * stretch

    Antonyms

    * condense