-cidal - definition of -cidal by The Free Dictionary
-cide (redirected from -cidal)
Also found in: Medical
1. Killer: bactericide.
2. Act of killing: ecocide.
[Middle English, from Old French (from Latin -cīda
) and from Latin -cīdium
, both from caedere
, to strike, kill
; see kaə-id-
in Indo-European roots
n combining form
1. indicating a person or thing that kills: insecticide.
2. (Law) indicating a killing; murder: homicide.
[from Latin -cīda (agent), -cīdium (act), from caedere to kill]
-cidal adj combining form
a combining form meaning “a person or thing that kills” or “the act of killing” that specified by the initial element: homicide; pesticide.
[late Middle English < Latin -cīda killer <caedere to cut down, kill]
A suffix that means "a killer of." It is used to form the names of chemicals that kill a specified organism, such as pesticide, a chemical that kills pests.
References in periodicals archive
The oocysts, after the initial exposure to herbal extracts, were washed clean and reincubated to establish whether any inhibition of sporulation was a true -cidal
(lethal) effect rather than a reversible -stasis (growth).
Nitrofurantoin may be either bacterio-static or -cidal
in action, depending on the concentration and susceptibility of the infecting organism, and exerts its effects by inhibiting DNA, RNA, protein and cell wall synthesis.