expend

[ik-spend]
verb (used with object)
1.
to use up: She expended energy, time, and care on her work.
2.
to pay out; disburse; spend.

Origin:
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)
 
vb
1.  to spend; disburse
2.  to consume or use up
 
[C15: from Latin expendere, from pendere to weigh]
 
ex'pender
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

expend
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
The hunt is on for low cost, high efficiency ways to keep the panels clean
  without expending more energy in the process.
Thus, altruistic individuals can prosper, despite the disadvantage of expending
  precious resources to produce the polymer.
The system has lost entropy, but without expending any energy, creating a
  seeming violation of the second law of thermodynamics.
The traveling bumblebee needs to visit a number of flowers everyday, while
  expending as little energy as possible.
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