Definition of accumulative adjective from the Oxford Advanced American Dictionary

 

accumulative

 adjective
adjective
NAmE//əˈkyumyəˌleɪt̮ɪv//
 
, NAmE//‑lət̮ɪv//
 
(formal)
 
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growing by increasing gradually the accumulative effects of pollution compare cumulative
See the Oxford Advanced Learner's Dictionary entry: accumulative