singleton

[ sing-guh l-tuh n ]
/ ˈsɪŋ gəl tən /

noun

a person or thing occurring singly, especially an individual set apart from others.
  1. a child or animal that is the only one born at one birth: a research program involving twins and singletons.
  2. an only child in a family.
Chiefly British. an unmarried person; a single.
Cards. a card that is the only one of a suit in a hand.
Mathematics. a set consisting of one given element.

Origin of singleton

First recorded in 1875–80; single + -ton
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for singleton

British Dictionary definitions for singleton

singleton
/ (ˈsɪŋɡəltən) /

noun

bridge an original holding of one card only in a suit
a single object, individual, etc, separated or distinguished from a pair or group
maths a set containing only one member
a person who is neither married nor in a relationship

Word Origin for singleton

C19: from single, on the model of simpleton
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012