operational

[op-uh-rey-shuh-nl]
adjective
1.
able to function or be used; functional: How soon will the new factory be operational?
2.
Military.
a.
of, pertaining to, or involved in military operations.
b.
on active service or combat duty: All units of the command are operational.
3.
of or pertaining to operations or an operation.

Origin:
1920–25; operation + -al1

operationally, adverb
nonoperational, adjective
preoperational, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
operational (ˌɒpəˈreɪʃənəl)
 
adj
1.  of or relating to an operation or operations
2.  in working order and ready for use
3.  military capable of, needed in, or actually involved in operations
 
oper'ationally
 
adv

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

operational
1922, from operation. Related: Operationalization; operationalize.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
We conclude that the initiation of large-scale operational weather modification
  programs would be premature.
Forward-thinking initiatives here also include operational biogas plants fueled
  by sewage treatment facilities.
It's unlikely that universities would look to the business world as an
  operational model to emulate, but they should.
Committees can become too large and unfocused, and lose track of their
  operational and fiduciary responsibilities.
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