accumulate

[uh-kyoo-myuh-leyt]
verb (used with object), accumulated, accumulating.
1.
to gather or collect, often in gradual degrees; heap up: to accumulate wealth.
verb (used without object), accumulated, accumulating.
2.
to gather into a heap, mass, cover, etc.; form a steadily increasing quantity: Snow accumulated in the driveway. His debts kept on accumulating.

Origin:
1520–30; < Latin accumulātus heaped up (past participle of accumulāre), equivalent to ac- ac- + cumul(us) heap + -ātus -ate1

accumulable, adjective
nonaccumulating, adjective
overaccumulate, verb, overaccumulated, overaccumulating.
preaccumulate, verb (used with object), preaccumulated, preaccumulating.
reaccumulate, verb, reaccumulated, reaccumulating.
superaccumulate, verb (used without object), superaccumulated, superaccumulating.
unaccumulable, adjective
unaccumulated, adjective
well-accumulated, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
accumulate (əˈkjuːmjʊˌleɪt)
 
vb
to gather or become gathered together in an increasing quantity; amass; collect
 
[C16: from Latin accumulātus, past participle of accumulāre to heap up, from cumulus a heap]
 
ac'cumulable
 
adj
 
ac'cumulative
 
adj
 
ac'cumulatively
 
adv
 
ac'cumulativeness
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

accumulate
1520s, from L. accumulatus, pp. of accumulare (see accumulation); pp. adj. accumulated drove out accumulate (adj.) in this sense (except poetic) by c.1700.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
Protein fragments accumulate between nerve cells.
The more faces they correctly identify the more points they accumulate.
Now, many grasslands have become woodlands, and can accumulate vast amounts of
  dead tinder—potential fuel for fire.
As readers move from one chapter to the next, insights accumulate.
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