null

Pronunciation

• (UK) (US) IPA ^(key): /nʌl/

• Audio (US)

  (file)

Adjective

Positive null

Comparative none

Superlative none

1. If a law, contract, rule, etc. is null and void, it has no force.

   Your marriage to the King has been declared null and void.

Noun

Singular null

Plural nulls

1. (countable) A null is a 0 or ∅.
   • Synonym: zero

   The temperature is null point five four (0.54).

2. (usually before a noun) A null hypothesis is the idea that there is no relationship, effect, or difference in an experiment.

   Again, the null hypothesis stating no difference was rejected.

3. (countable) A null is a symbol with no meaning or effect.

Verb

Plain form null

Third-person singular nulls

Past tense nulled

Past participle nulled

Present participle nulling

1. (transitive) If you null (out) a force, effect, signal, etc., you cancel it out or remove it.
   • Synonym: nullify

Synonyms

• nothing
• zero