singleton /ˈsɪŋ.ɡ(ə)l.tən/noun 11adjective 1forms 3 noun11 •A single object, especially one of a group. •A person without a romantic partner.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. — 2022 •Synonym of blot. •A child or animal that is born singly, not as a twin or other multiple birth.Viable non-malformed singleton pregnancies were selected for cerebellar measurements; transcerebellar diameter, (TCD), left and right cerebellar diameters (LCD, RCD). — 2015 •A playing card that is the only one of its suit in a hand, especially at bridge. •A hand containing only one card of a certain suit. •A class that may not be instantiated more than once, i.e. that implements the singleton design pattern. •A set with exactly one element. •A single consonant, as opposed to a geminated consonant. •A class offered only once within a school year. •A person without a dissociative identity. adjective1 •Of a class offered only once within a school year. formssingletons · more singleton · most singleton