AskDefine | Define singleton

Dictionary Definition



1 a single object (as distinguished from a pair)
2 a set containing a single member
3 the playing card that is the only card in a suit held in a bridge hand as initially dealt

User Contributed Dictionary



  1. In the context of "playing cards": A playing card that is the only one of its suit in a hand, especially at bridge.
  2. A single object, especially one of a group.
  3. In the context of "computer science": A design pattern to force a class to have no more than one instance at any given time.
  4. In the context of "computer science": A class that may not be instantiated more than once at a time, i.e. that implements the singleton design pattern.
  5. In the context of "math": A set with just one element.

Derived terms


playing card
  • Dutch: bloot kaart, singleton
single object
  • Dutch: enkeling
  • Finnish: ainokainen
design pattern
  • Dutch: singleton
  • Dutch: singleton
  • Dutch: singleton, eenelementig verzameling
  • Portuguese: conjunto unitário



  • siŋɘltɔn


  1. A singleton (lone playing card).
  1. A singleton (design pattern, class, set).

Extensive Definition

Singleton may refer to:
Singleton may also be:
  • A character encoded with one unit in variable-width encoding schemes for computer character sets
  • A person that is not a twin or other multiple birth
  • A self-description of individuals without romantic partners, particularly applied to women in their thirties introduced in the novel and film Bridget Jones's Diary
  • Singleton, a short story by Greg Egan
  • An empty tag or self-closing tag in XHTML or XML coding
  • A single card in a suit, as part of a hand in Bridge

Places named Singleton

People with the surname Singleton

singleton in German: Singleton
singleton in Spanish: Singulete
singleton in French: Singleton
singleton in Dutch: Singleton
singleton in Polish: Singleton

Synonyms, Antonyms and Related Words

ace, article, best bower, bower, cards, clubs, deck, deuce, diamonds, dummy, entity, face cards, flush, full house, hand, hearts, individual, integer, item, jack, joker, king, knave, left bower, module, pack, pair, person, persona, picture cards, playing cards, point, queen, round, royal flush, rubber, ruff, single, soul, spades, straight, trey, trick, trump, unit
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