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To protect from loss or harm; preserve: calls to conserve our national heritage in the face of bewildering change.
(verb-transitive)
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To use carefully or sparingly, avoiding waste: kept the thermostat lower to conserve energy.
(verb-transitive)
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To keep (a quantity) constant through physical or chemical reactions or evolutionary changes.
(verb-transitive)
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To preserve (fruits) with sugar.
(verb-transitive)
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To economize: tried to conserve on fuel during the long winter.
(verb-intransitive)
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.