n.
Pronunciation: vis- ' kä-s ə -t ē
Function: noun
Inflected Form: plural -ties
Etymology: Middle English viscosite, from Anglo-French viscosité, from Medieval Latin viscositat-, viscositas, from Late Latin viscosus viscous
Date: 14th century
1 : the quality or state of being viscous
2 : the property of resistance to flow in a fluid or semifluid
3 : the ratio of the tangential frictional force per unit area to the velocity gradient perpendicular to the direction of flow of a liquid ― called also coefficient of viscosity