flaumji fu'ivla

x1 is the scalar flux (total flow) of quantity/substance x2 through bounding Jordan orientable manifold x3 under conditions and conventions of definition x4 (including actual orientation of x3, signum of outflux, etc.)

This is the hypersurface integral sense "flux". For the sense of the integrand which produces this meaning, use flaukse. See also: flecu, nildenmi.

In notes:

x1 is the vector flux (flow) of quantity/substance (count) x2 through (geometric/imaginary) hypersurface/embedded manifold x3 per unit hyperarea per unit time.