What is the verb of ”contraception”

Hi,
Contracept(verb)<---------------


con⋅tra⋅cept 



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–verb (used with object)



1.
to prevent the conception of (offspring).



2.

to prevent pregnancy or impregnation in; provide with the means for birth control.





Origin:
1965–70; back formation from contraception
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Here is a website for you:
http://dictionary.reference.com/browse/CONTRACEPT



Hope that helps.

Bye for now.