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Meaning of singleton

sin•gle•ton

Pronunciation: (sing'gul-tun), [key]
— n.
  1. a person or thing occurring singly, esp. an individual set apart from others: a research program involving twins and singletons.
  2. a card that is the only one of a suit in a hand.
  3. a set consisting of one given element.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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