symbols: $\omega_{\rm{e}}$, $\omega_{k}$, units: $\pu{m-1}$, $\pu{cm-1}$
synonym: harmonic wavenumber
https://doi.org/10.1351/goldbook.08610
Coefficient of (\(\nu + ½\)) in the vibrational term value, determined by the harmonic terms in the vibrational potential energy.
Note: SI unit: \(\pu{m-1}\). Common unit: \(\pu{cm-1}\).