Definition of ratify verb from the Oxford Advanced Learner's Dictionary

 

ratify

 verb
verb
BrE BrE//ˈrætɪfaɪ//
 
; NAmE NAmE//ˈrætɪfaɪ//
 
Verb Forms present simple I / you / we / they ratify
BrE BrE//ˈrætɪfaɪ//
 
; NAmE NAmE//ˈrætɪfaɪ//
 
he / she / it ratifies
BrE BrE//ˈrætɪfaɪz//
 
; NAmE NAmE//ˈrætɪfaɪz//
 
past simple ratified
BrE BrE//ˈrætɪfaɪd//
 
; NAmE NAmE//ˈrætɪfaɪd//
 
past participle ratified
BrE BrE//ˈrætɪfaɪd//
 
; NAmE NAmE//ˈrætɪfaɪd//
 
-ing form ratifying
BrE BrE//ˈrætɪfaɪɪŋ//
 
; NAmE NAmE//ˈrætɪfaɪɪŋ//
 
 
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ratify something to make an agreement officially valid by voting for or signing it The treaty was ratified by all the member states. Word Origin late Middle English: from Old French ratifier, from medieval Latin ratificare, from Latin ratus ‘fixed’, past participle of reri.
See the Oxford Advanced American Dictionary entry: ratify