centistokes

A unit of kinematic viscosity, one hundreth of a stokes. Symbol, cSt. In practice, measurements are usually stated in centistokes, not stokes.

The kinematic viscosity of water is about 1.0038 centistokes.¹

1.
J. F. Swindells, J. R. Coe, T. B. Godfrey.
National Bureau of Standards Research paper 2279.
Washington: USGPO, 1952.

Later workers have reported somewhat different values, but for many years this value was used as a standard.