Origin: 1525–35; < Latin cumulātus (past participle of cumulāre to heap up, pile up, accumulate), equivalent to cumul(us) a heap, pile, mass, cumulus + -ātus-ate1
Related forms
cu·mu·late·ly, adverb
de·cu·mu·late, verb (used with object), de·cu·mu·lat·ed, de·cu·mu·lat·ing.