a. [f. prec. + -AL.] Of, pertaining or relating to, a solenoid; of the nature or having the properties of a solenoid.
1873. Maxwell, Electr. & Magn., I. 21. The distribution of the vector quantity is said to be Solenoidal.
1883. Encycl. Brit., XV. 230/2. Solenoidal Magnets [are] such that the vector I satisfies the solenoidal condition.
1897. Curry, Theory Electr. & Magnetism, 256. This solenoidal arrangement of the molecular currents.
Hence Solenoidally adv.
1883. Encycl. Brit., XV. 231/1. When a body is solenoidally magnetized. Ibid. The magnetic action of a solenoidally magnetized body.