-cide Look up -cide at Dictionary.com
word-forming element meaning "killer," from French -cide, from Latin -cida "cutter, killer, slayer," from -cidere, combining form of caedere "to strike down, chop, beat, hew, fell, slay," from Proto-Italic kaid-o-, from PIE root *kae-id- "to cut, hew" (cognates: Sanskrit skhidati "beats, tears," Lithuanian kaisti "shave," Armenian xait'em "to stab," Albanian qeth "to shave," Middle Dutch heien "to drive piles," Old High German heia "wooden hammer," German heien "beat"). For Latin vowel change, see acquisition. The element also can represent "killing," from French -cide, from Latin -cidium "a cutting, a killing."