Definify.com
Webster 1913 Edition
Prevene
Pre-vene′
,Verb.
 T.
 & I.
 To come before; to anticipate; hence, to hinder; to prevent. 
[Obs.] 
Philips.
 Webster 1828 Edition
Prevene
PREVE'NE
,Verb.
T.
 Literally, to come before; hence, to hinder.  [Not used.]