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To increase the size, volume, quantity, or scope of; enlarge: expanded her store by adding a second room. See Synonyms at increase.
(verb-transitive)
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To express at length or in detail; enlarge on: expanded his remarks afterward.
(verb-transitive)
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To open (something) up or out; spread out: The bird expanded its wings and flew off.
(verb-transitive)
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Mathematics To write (a quantity) as a sum of terms in an extended form.
(verb-transitive)
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To become greater in size, volume, quantity, or scope: Air expands when heated. This critic's influence is expanding.
(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.