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A state of open, armed, often prolonged conflict carried on between nations, states, or parties.
(noun)
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The period of such conflict.
(noun)
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The techniques and procedures of war; military science.
(noun)
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A condition of active antagonism or contention: a war of words; a price war.
(noun)
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A concerted effort or campaign to combat or put an end to something considered injurious: the war against acid rain.
(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.