NULL

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 Dictionary entry overview: What does null mean? 

• NULL (noun)
  The noun NULL has 1 sense:

1. a quantity of no importance

  Familiarity information: NULL used as a noun is very rare.

• NULL (adjective)
  The adjective NULL has 1 sense:

1. lacking any legal or binding force

  Familiarity information: NULL used as an adjective is very rare.

 Dictionary entry details 

• NULL (noun)

Sense 1

Meaning:

A quantity of no importance

Classified under:

Nouns denoting quantities and units of measure

Synonyms:

aught; cipher; cypher; goose egg; nada; naught; nil; nix; nothing; null; zero; zilch; zip; zippo

Context example:

I didn't hear zilch about it

Hypernyms ("null" is a kind of...):

relative quantity (a quantity relative to some purpose)

Hyponyms (each of the following is a kind of "null"):

nihil ((Latin) nil; nothing (as used by a sheriff after an unsuccessful effort to serve a writ))

bugger all; Fanny Adams; fuck all; sweet Fanny Adams (little or nothing at all)

• NULL (adjective)

Sense 1

Meaning:

Lacking any legal or binding force

Synonyms:

null; void

Context example:

null and void

Similar:

invalid (having no cogency or legal force)

Domain category:

jurisprudence; law (the collection of rules imposed by authority)

Derivation:

nullity (something that is null (especially an enactment that has no legal validity))

 Context examples 

Null mutations of the GSTM1 gene are associated with several types of human cancer such as lung, bladder, and head and neck cancers.

(GSTM1 wt Allele, NCI Thesaurus)

EXAMPLE(S): Fire drill - forgot to ask, subject refused, sample lost, broken equipment; NOTE(S): This value should only be populated if PerformedObservationResult.value is null.

(Performed Observation Result Value Null Flavor Reason, NCI Thesaurus/BRIDG)

These dates are required for all randomized subjects; null for screen failures (if screen failures are submitted).

(Performed Study Subject Milestone Study Reference Date Range, NCI Thesaurus/BRIDG)

“I appeal to the referee! The fight is null and void.”

(Rodney Stone, by Sir Arthur Conan Doyle)

A null cell pituitary gland adenoma, characterized by the presence of eosinophilic cells and mitochondrial abundance.

(Pituitary Gland Oncocytic Adenoma, NCI Thesaurus)

Informal term for the generation of a mutant mouse in which the function of a particular gene has been completely eliminated, also called a null mouse.

(Knock-Out Mouse, NCI Thesaurus)

Expresses the extent to which the observed frequency of co-occurrence differs from that expected under the null hypothesis.

(Mutual Information Value, NCI Thesaurus)

The GSTT1 null genotype is associated with an increased risk for the development of cancer.

(GSTT1 wt Allele, NCI Thesaurus)

Conversely, the association between poultry intake and diabetes risk became null, suggesting that this risk was attributable to the heme-iron content in poultry.

(Eating Meat Linked to Higher Risk of Diabetes, The Titi Tudorancea Bulletin)

Marriage contract has been declared null and to not have existed.

(Annulled, NCI Thesaurus/CDISC)