The definition of cide is a killer or a killing.
(suffix)An example of cide used as a suffix is fungicide, which is a substance that kills fungus or spores.
See -cide in Webster's New World College Dictionary
Origin: < Fr or L; Fr -cide < L -cida < caedere, to cut down, kill < IE base *(s)k(h)ai-, to strike > MDu heien
See -cide in American Heritage Dictionary 4
Origin:
Origin: Middle English
Origin: , from Old French (from Latin -cīda, killer)
Origin: and from Latin -cīdium, killing
Origin: , both from caedere, to strike, kill; see kaə-id- in Indo-European roots
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