electron correlation

https://doi.org/10.1351/goldbook.E01984
The adjustment of electron motion to the instantaneous (as opposed to time-averaged) positions of all the electrons in a molecular entity.
See also:
correlation energy
Source:
PAC, 1996, 68, 2223. (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2238 [Terms] [Paper]