shear dependent viscosity
For systems showing non-Newtonian behaviour when measured in steady simple shear, a coefficient η equal to σ D at a given value of the shear rate D, where σ is the stress; η 0 is the limiting viscosity at zero shear rate, and η ∞ the limiting viscosity at infinite shear rate; [η0] is the limit of intrinsic viscosity at zero shear.
PAC, 1979, 51, 1213. 'Terminology and Symbols in Colloid and Surface Chemistry Part 1.13. Definitions, Terminology and Symbols for Rheological Properties' on page 1217 (