An Etymological Dictionary of Astronomy and Astrophysics

A suffix meaning “killer; act of killing.” → genocide.

Etymology (EN): M.E., from L. -cida “cutter, killer,” -cidium “act of killing,” from combining form -cidere, from caedere “to strike down, kill.”

Etymology (PE): -koši, from koštan “to kill,” Mid.Pers. kuštan “to kill, to stuggle;” related to košti “fighting, wrestling;” Av. kuš- “to fight, to struggle” (Cheung 2007).