rhe
/riː/Physics
noun
A unit of dynamic fluidity in the cgs system, defined variously as the reciprocal of the poise or the centipoise. Also: a unit of kinematic fluidity in the cgs system, defined as the reciprocal of the centistokes (rare ).
Origin
1920s; earliest use found in Science. From ancient Greek ῥέος stream: see quot. 1924.