Definitive may refer to:
* ''Definitive'' (TV series), an American music television series
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Definitive stamp, a postage stamp that is part of a regular issue of a country's stamps available for sale by the postal service
See also
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Definiteness (disambiguation)
Definiteness is a feature of noun phrases in grammatical theory.
Definiteness may also refer to:
* Counterfactual definiteness, a concept in quantum mechanics
* For the definiteness of forms in multilinear algebra, see Definite quadratic form.
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Definition (disambiguation)
A definition is a statement of the meaning of a term.
Definition may also refer to:
Science, mathematics and computing
* In computer programming languages, a declaration that reserves memory for a variable or gives the body of a subroutine
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