Definition: 'Singlet State'
singlet stateType: Term
1. a transient, excited state of a molecule (of chlorophyll, on absorbing light) in which a molecule can release energy as heat or light (fluorescence) and thus return to its initial (ground) state; it may alternatively assume a slightly more stable but still excited state (triplet state), with an electron still dislocated as before but with reversed spin.
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