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Porous vs Null - What's the difference?

porous | null |

As an adjective porous

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

As a noun null is

zero, nil; the cardinal number before einn.

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

    null

    English

    Noun

    (en noun)
  • A non-existent or empty value or set of values.
  • Zero]] quantity of [[expression, expressions; nothing.
  • (Francis Bacon)
  • Something that has no force or meaning.
  • (computing) the ASCII or Unicode character (), represented by a zero value, that indicates no character and is sometimes used as a string terminator.
  • (computing) the attribute of an entity that has no valid value.
  • Since no date of birth was entered for the patient, his age is null .
  • One of the beads in nulled work.
  • (statistics) null hypothesis
  • Adjective

    (en adjective)
  • Having no validity, "null and void"
  • insignificant
  • * 1924 , Marcel Proust, Within a Budding Grove :
  • In proportion as we descend the social scale our snobbishness fastens on to mere nothings which are perhaps no more null than the distinctions observed by the aristocracy, but, being more obscure, more peculiar to the individual, take us more by surprise.
  • absent or non-existent
  • (mathematics) of the null set
  • (mathematics) of or comprising a value of precisely zero
  • (genetics, of a mutation) causing a complete loss of gene function, amorphic.
  • Derived terms

    * nullity

    Verb

    (en verb)
  • to nullify; to annul
  • (Milton)

    See also

    * nil ----