singlet

(redirected from Singlet state)
Also found in: Dictionary, Thesaurus, Medical.

singlet

1. Physics a multiplet that has only one member
2. Chem a chemical bond consisting of one electron

singlet

[′siŋ·glət]
(quantum mechanics)
An energy level that is not split by a relatively weak interaction, and thus is not a multiplet or a member of a multiplet.
(spectroscopy)
A spectral line that cannot be resolved into components at even the highest resolution.
References in periodicals archive ?
Potential energy surfaces were calculated for the singlet states derived from the [[pi].
Highly conjugated molecules such a parphyrins have low-lying excited singlet states that can be excited by light in the 600 to 800 nm region, corresponding to the wavelengths that transmit quite deeply into human tissues.
Most large molecules have singlet ground states, and excitation leads to excited singlet states.