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cumulate

[verb kyoo-myuh-leyt; adjective kyoo-myuh-lit, -leyt]
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verb (used with object), cu·mu·lat·ed, cu·mu·lat·ing.
  1. to heap up; amass; accumulate.
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adjective
  1. heaped up.
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Origin of cumulate

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 formscu·mu·late·ly, adverbde·cu·mu·late, verb (used with object), de·cu·mu·lat·ed, de·cu·mu·lat·ing.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for decumulate

cumulate

verb (ˈkjuːmjʊˌleɪt)
  1. to accumulate
  2. (tr) to combine (two or more sequences) into one
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adjective (ˈkjuːmjʊlɪt, -ˌleɪt)
  1. heaped up
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Derived Formscumulately, adverbcumulation, noun

Word Origin

C16: from Latin cumulāre from cumulus heap
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for decumulate

cumulate

v.

1530s, from Latin cumulatus "heaped, increased, augmented," past participle of cumulare "to heap," from cumulus "mound, heap" (see cumulus). Related: Cumulated; cumulating.

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Online Etymology Dictionary, © 2010 Douglas Harper