Definition of congratulation noun from the Oxford Advanced Learner's Dictionary

Oxford3000

congratulation

noun
kənˌɡrætʃuˈleɪʃn
 
; kənˌɡrætʃuˈleɪʃn
 
 
1 congratulations [plural] a message congratulating somebody (= saying that you are happy about their good luck or success)to offer/send your congratulations to somebody2 Congratulations! used when you want to congratulate somebody‘We're getting married!’ ‘Congratulations!’Congratulations on your exam results!3 [uncountable] the act of congratulating somebodya letter of congratulation