singletPronunciation: /ˈsɪŋglɪt/Translate singlet | into French | into German | into Italian Definition of singlet noun 1chiefly British a sleeveless garment worn under or instead of a shirt; a vest. 2 Physics a single unresolvable line in a spectrum, not part of a multiplet. a state or energy level with zero spin, giving a single value for a particular quantum number. 3 Chemistry an atomic or molecular state in which all electron spins are paired: [as modifier]:singlet oxygenOrigin: mid 18th century (originally denoting a man's short jacket): from single (because the garment was unlined) + -et1, on the pattern of doubletsinglet in other Oxford dictionaries Definition of singlet in the US English dictionary
