partition

https://doi.org/10.1351/goldbook.P04435
This term is often used as a synonym for distribution and @[email protected] However, an essential difference exists by definition between @[email protected] or @[email protected] and @[email protected] The term partition should be, but is not invariably, applied to the distribution of a single definite chemical species between the two phases.
Source:
PAC, 1993, 65, 2373. (Nomenclature for liquid-liquid distribution (solvent extraction) (IUPAC Recommendations 1993)) on page 2378 [Terms] [Paper]