ponderomotive
/ˌpɒndərə(ʊ)ˈməʊtɪv/Physics
adjective
Designating or relating to a force exerted on a mass by an electric or magnetic field.
Origin
Late 19th century; earliest use found in Silvanus Thompson (1851–1916), physicist and electrical engineer. From classical Latin ponder-, pondus pondus + -o- + motive, after electromotive.