singlet
/ˈsɪŋglɪt/noun
1
- chiefly Brit. a sleeveless garment worn under or instead of a shirt; a vest〈主英〉（无袖的）汗衫, 背心。
2
- Physics a single unresolvable line in a spectrum, not part of a multiplet【物理】单（谱）线。
2.1
- a state or energy level with zero spin, giving a single value for a particular quantum number零自旋（核）能极。
2.2
- Chemistry an atomic or molecular state in which all electron spins are paired【化】单（线）态。
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