null.
A non-existent or empty value or set of values.
Meaning & usage
A non-existent or empty value or set of values.
Zero quantity of expressions; nothing.
Something that has no force or meaning.
The null character; the ASCII or Unicode character (␀), represented by a zero value, which indicates no character and is sometimes used as a string terminator.
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.
The null hypothesis.
Where this word comes from
Etymology tree Proto-Indo-European *ís? Proto-Indo-European *h₁óynos Proto-Italic *oinosder. Proto-Italic *noinolos Latin nūllusder. Old French nul Middle French nulbor. English null Borrowed from Middle French nul, from Latin nūllus.
Having no validity; "null and void".
Insignificant.
Absent or non-existent.
Of the null set.
Of or comprising a value of precisely zero.
Causing a complete loss of gene function; amorphic.
Neutral.
Where this word comes from
Etymology tree Proto-Indo-European *ís? Proto-Indo-European *h₁óynos Proto-Italic *oinosder. Proto-Italic *noinolos Latin nūllusder. Old French nul Middle French nulbor. English null Borrowed from Middle French nul, from Latin nūllus.
To nullify; to annul.
To return to the null position, setting, etc.
To form nulls, or into nulls, as in a lathe.
To crack; to remove restrictions or limitations in (software).
Where this word comes from
Etymology tree Proto-Indo-European *ís? Proto-Indo-European *h₁óynos Proto-Italic *oinosder. Proto-Italic *noinolos Latin nūllusder. Old French nul Middle French nulbor. English null Borrowed from Middle French nul, from Latin nūllus.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.