Divergence
VECTOR DIFFERENTIAL OPERATOR MEASURING THE SOURCE OR SINK AT A GIVEN POINT
Divergency; Spherical divergence; Div operator; Divergence of a vector field
In vector calculus, divergence is a vector operator that operates on a vector field, producing a scalar field giving the quantity of the vector field's source at each point. More technically, the divergence represents the volume density of the outward flux of a vector field from an infinitesimal volume around a given point.