verb (used with object), consumed, consuming.
to destroy or expend by use; use up.
to eat or drink up; devour.
to destroy, as by decomposition or burning: Fire consumed the forest.
to spend (money, time, etc.) wastefully.
to absorb; engross: consumed with curiosity.
verb (used without object), consumed, consuming.
to undergo destruction; waste away.
to use or use up consumer goods.

1350–1400; Middle English (< Middle French consumer) < Latin consūmere, equivalent to con- con- + sūmere to take up (perhaps < *suzm- < *subzm- < *subs-(e)m-, equivalent to subs-, variant of sub- sub- + emere to take, buy)

half-consumed, adjective
overconsume, verb, overconsumed, overconsuming.
preconsume, verb (used with object), preconsumed, preconsuming.
unconsumed, adjective
underconsume, verb (used with object), underconsumed, underconsuming.

1. exhaust, deplete. 4. squander, dissipate. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
consume (kənˈsjuːm)
1.  (tr) to eat or drink
2.  (tr; often passive) to engross or obsess
3.  (tr) to use up; expend: my car consumes little oil
4.  to destroy or be destroyed by burning, decomposition, etc: fire consumed the forest
5.  (tr) to waste or squander: the time consumed on that project was excessive
6.  (passive) to waste away
[C14: from Latin consūmere to devour, from com- (intensive) + sūmere to take up, from emere to take, purchase]

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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Word Origin & History

late 14c., from L. consumere "to use up, eat, waste," from com- intensive prefix + sumere "to take," from sub- "under" + emere "to buy, take" (see exempt).
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
We're totally uprooting in this move, and preparing for it consumes a lot of
  time and emotional energy.
As you said, a sleeping laptop consumes almost no energy.
No novel or play or long poem will offer its full rewards to someone who
  consumes it in small chunks and crumbs.
Healing consumes a lot of physical and mental resources.
Related Words
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