interfacial surface tension
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in·ter·fa·cial sur·face ten·sion
the tension or resistance to separation possessed by the film of liquid between two well-adapted surfaces, as of the thin film of saliva between the denture base and the tissues.
in·ter·fa·cial sur·face ten·sion(intĕr-fāshăl sŭrfăs tenshŭn)
Resistance to separation possessed by film of liquid between two well-adapted surfaces.