A term established by usage for A/W/A films stabilized by
surfactants although it is not a
film of
soap, nor is the stabilizing surfactant necessarily a
soap. (A/W/A means water
film in air).
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 613