surface of discontinuity

surface of discontinuity

[¦sər·fəs əv ‚dis‚känt·ən′ü·əd·ē]
(fluid mechanics)
A surface within a fluid across which there is a discontinuity in fluid velocity; often generated in the wake of a body moving relative to the fluid.
(meteorology)
An interface, applied to the atmosphere; for example, an atmospheric front is represented ideally by a surface of discontinuity of velocity, density, temperature, and pressure gradient.