A process in which a solid or liquid, β, is covered with a liquid, α, both of which
were initially in contact with a gas or liquid, δ, without changing the area of the
αδ-
interface.
Source:
PAC, 1972, 31, 577
(Manual of Symbols and Terminology for Physicochemical Quantities and Units, Appendix
II: Definitions, Terminology and Symbols in Colloid and Surface Chemistry)
on page 598