decidable

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UK[dɪˈsaɪdəbəɫ]

adjective

capable of being decided.

“It is easy to show that the set of even numbers is decidable by creating the relevant Turing machine.”

Opposite
UncommonScrabble 15

Meanings

adjectivedecidable (comparative more decidable, superlative most decidable)

comparative more decidable · superlative most decidable

  1. capable of being decided.
  2. computerdescribing a set for which there exists an algorithm that will determine whether any element is or is not within the set in a finite amount of time.

    It is easy to show that the set of even numbers is decidable by creating the relevant Turing machine.

  3. human sciencesin intuitionistic logic, a proposition P is decidable in a given theory if it can be proven from the theory that "either P or not P", i.e. in symbols: P∨¬P.

Synonyms & antonyms

Opposite
Also see

Origin

Translations

Czech rozhodnutelný
  • rozhodnutelnýcapable of being decided
Finnish ratkaistavissa oleva, ratkaistavissa oleva
  • ratkaistavissa olevacapable of being decided
  • ratkaistavissa olevacomputer science: describing a set
German entscheidbar, entscheidbar
  • entscheidbarcapable of being decided
  • entscheidbarcomputer science: describing a set
Hebrew כריע
  • כריע (karí'a)computer science: describing a set
Romanian decidabil
  • decidabilcomputer science: describing a set
Russian разрешимый
  • разрешимый (razrešimyj)capable of being decided
Spanish decidible
  • decidiblecapable of being decided
Cite this entry
APA

decidable. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/decidable

MLA

“decidable.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/decidable. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “decidable,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/decidable.

Source: decidable on Wiktionary, CC BY-SA 4.0.