Null Definition

nŭl
nulls
adjective
Without legal force; not binding; invalid.
Webster's New World
Amounting to naught; nil.
Webster's New World
Of no value, effect, or consequence; insignificant.
Webster's New World
Amounting to nothing; absent or nonexistent.
A null result.
American Heritage
(mathematics) Of the null set.
Wiktionary
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noun
nulls
Of or relating to a set having no members or to zero magnitude.
American Heritage Science
An instrument reading of zero.
American Heritage
Zero; nothing.
American Heritage
Something that has no force or meaning.
Wiktionary

(computing) The ASCII or Unicode character (␀), represented by a zero value, that indicates no character and is sometimes used as a string terminator.

Wiktionary
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verb
To make null.
American Heritage
Wiktionary
other

In some computer programs, a field into which nothing is entered, not even a zero (0). In such programs, even a 0 can affect calculations. See also negative and positive.

Webster's New World Telecom

Other Word Forms of Null

Noun

Singular:
null
Plural:
nulls

Origin of Null

  • French nul from Old French from Latin nūllus ne in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Middle French nul, from Latin nullus.

    From Wiktionary

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