verb (used with object)
to use up: She expended energy, time, and care on her work.
to pay out; disburse; spend.

1400–50; late Middle English < Latin expendere to weigh out, lay out, pay

expender, noun
overexpend, verb
preexpend, verb (used with object)
unexpended, adjective
well-expended, adjective

expand, expend (see synonym study at expand).

1. consume, empty. See spend.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
expend (ɪkˈspɛnd)
1.  to spend; disburse
2.  to consume or use up
[C15: from Latin expendere, from pendere to weigh]

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

early 15c., from L. expendere "pay out," from ex- "out" + pendere "to pay, weigh" (see pendant). Related: Expended; expending.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
And then, apparently, they will have liberated more capital to expend on more
  reckless loans to ailing companies.
The researchers found that heavier birds did not expend as much energy as
  expected to carry the extra weight.
There is a simple rule of thumb that can be applied toward multiple solutions:
  don't expend energy in order to dissipate energy.
Levine, an endocrinologist, has spent his career studying how humans expend
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