verb (used with object)
Military. to spread out (troops) so as to form an extended front or line.
to arrange in a position of readiness, or to move strategically or appropriately: to deploy a battery of new missiles.
verb (used without object)
to spread out strategically or in an extended front or line.
to come into a position ready for use: the plane can't land unless the landing gear deploys.

1470–80; < French déployer, equivalent to dé- dis-1 + ployer to fold; see ploy

deployable, adjective
deployability, noun
deployment, noun
counterdeployment, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
deploy (dɪˈplɔɪ)
1.  to adopt or cause to adopt a battle formation, esp from a narrow front formation
2.  (tr) to redistribute (forces) to or within a given area
[C18: from French déployer, from Latin displicāre to unfold; see display]

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

1786 as a military word, from Fr. déployer "unroll, unfold," from O.Fr. desployer "unfold," from L. displicare "unfold, scatter," from dis- + plicare "to fold" see ply (v.)).
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
They are excellent weapons for nongovernmental predators to deploy against
  centers of government.
Two boats will deploy side-scan sonar to survey broad areas of the seafloor.
Many of these essays deploy riskily mellifluous language; they all ring
  personal, fervent and true.
The next step is to deploy the practice nationally.
Related Words
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