singleton

noun

1. A playing card that is the only one of its suit in a hand, especially at bridge.
2. A hand containing only one card of a certain suit.
3. A single object, especially one of a group.
4. A class that may not be instantiated more than once, i.e. that implements the singleton design pattern.
5. A set with exactly one element.
6. A child or animal that is born singly, not as a twin or other multiple birth.

   “singleton preterm birth”

   “Viable non-malformed singleton pregnancies were selected for cerebellar measurements; transcerebellar diameter, (TCD), left and right cerebellar diameters (LCD, RCD).”

7. A person without a romantic partner.

   “The time draws near when pink and red creep insidiously into the periphery, jewelry retailers go into overdrive and drugstore aisles burst with cherubs for the one holiday of the year that separates the singletons from the significant-othered.”

   “Millennials and Gen Zedders’ approach to romance can teach later-life singletons a thing or two about new relationships, according to dating agent Anna Williamson.”

8. A person without a dissociative identity.
9. A single consonant, as opposed to a geminated consonant.

   “singleton sonorants”

10. Synonym of blot.
11. A class offered only once within a school year.

adj

1. Of a class offered only once within a school year.

   “a singleton class”

name

1. (countable, uncountable)A placename:
2. (countable, uncountable)A placename:
3. (countable, uncountable)A placename:
4. (countable, uncountable)A placename:
5. (countable, uncountable)A placename:
6. (countable, uncountable)A habitational surname from Old English.

   “[…] she busied herself in the front room, rustling about in Anne Kellaway’s box of buttony materials filled with rings of various sizes, chips of sheep horn for the Singletons, a ball of flax for shaping round buttons, bits of linen for covering them, both sharp and blunt needles, and several different colors and thicknesses of thread.”

   “Graphs with diameter d and girth 2d#43;1 are known as Moore graphs. They were introduced by Hoffman and Singleton in a paper that can be viewed as one of the prime sources of algebraic graph theory.”