Said of two or more liquids that are mutually soluble (i.e. they will dissolve in each other) (McGraw-Hill, 1974). The chemical property of two or more phases that, when brought together, have the ability to mix and form one phase (after AGI, 1980).
Motions describing an equlibrium between pressure gradient force, Coriolis force and the turbulent drag force.
A system or flow that evolves slowly in time compared to the rotation period of the earth, has a length scale of the deformation radius or larger, and undergoes only limited vertical excursions.