Viscosity
Pronunciation : Vis*cos"i*ty
Part of Speech : n.
Etymology : [Cf. F. viscosit?, LL. viscositas.]
Definition : 1. The quality or state of being viscous.
2. (Physics)
Defn: A quality analogous to that of a viscous fluid, supposed to be caused by internal friction, especially in the case of gases.
Source : Webster's Unabridged Dictionary, 1913