Adjective
Characteristic of a solenoid
(vector calculus) Describing a vector field having no divergence anywhere
Source: en.wiktionary.orgHere, the projections are accomplished by the orthogonality of the solenoidal and irrotational function spaces. Source: Internet
One important property of the B -field produced this way is that magnetic B -field lines neither start nor end (mathematically, B is a solenoidal vector field ); a field line either extends to infinity or wraps around to form a closed curve. Source: Internet