Quantitative measures of solvent polarity, based on the solvent’s dispersion/induction interactions, electrostatic interactions between permanent multipoles, solute Lewis base/solvent Lewis acid interactions, and solute HBD/solvent HBA interactions.
Source:
PAC, 2022, 94, 353. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 2021)' on page 453 (https://doi.org/10.1515/pac-2018-1010)