An Etymological Dictionary of Astronomy and Astrophysics

The ratio of the magnetomotive force acting in a magnetic circuit to the magnetic flux. Also called magnetic resistance, it is analogous to resistance in an electrical circuit.

Etymology (EN): Reluctance “act of struggling against;” L. reluctari “to struggle against,” from → re- “against” + luctari “to struggle.”

Etymology (PE): Setehi “contention, litigation,” related to setihidan “to quarrel, brawl,” setiz, “battle, combat, conflict,”
setizidan “to fight;” Mid.Pers. stêzag “quarrel, strife;” Av. stij- “battle;” cf. Skt. steg- “to assail;” Gk. stizein “to prick, puncture,” stigma “mark, puncture;” O.E. stician “to pierce, stab;” E. stick (v.); PIE *steig- “to sting, stab.”