An Etymological Dictionary of Astronomy and Astrophysics
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The ratio of the → dynamic viscosity (η) to the density (ρ) of a fluid: ν = η/ρ. The unit of kinematic viscosity in the → SI system is m²s^-1. In the → cgs system, cm²s^-1, equal to 10^-4 m²s^-1, is called the → stokes (st).

→ kinematic; → viscosity.