singleton

• Nom désignant un objet ou un exemple unique, par opposition à une paire ou à un groupe ; utilisé aussi en mathématiques pour un ensemble contenant exactement un élément, et aux cartes pour une seule carte d'une couleur dans une main.

A noun referring to a single object or instance, as distinguished from a pair or group; also used in mathematics for a set containing exactly one element, and in card games for the only card of a suit in a hand.

1. Single objectB2formal

   A single item or entity, as opposed to a pair or group.

   élément unique

   • The collection contained a singleton from the artist's early period.
   • In the database, this record is a singleton with no duplicates.
   • The algorithm returns a singleton when only one result is found.

   Synonymesentityindividualitemonesingleunit

   Antonymescollectiongroupmultitudeset

2. Set with one elementC1formalscientific

   A mathematical set that contains exactly one member.

   Singleton (ensemble à un élément)

   • The set {5} is a singleton in mathematics.
   • In set theory, a singleton is a set with a single element.
   • The function returns a singleton when the input is unique.

3. Card in bridgeC1formalsport

   A playing card that is the only card of its suit in a bridge hand as initially dealt.

   Singleton (au bridge)

   • He was dealt a singleton in the heart suit.
   • Having a singleton can be a strategic advantage in bridge.
   • The player's hand contained a singleton spade.

   Synonymesstiff