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Chemistry To cause (a solid or gas) to change state without becoming a liquid.
(verb-transitive)
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To modify the natural expression of (a primitive, instinctual impulse) in a socially acceptable manner.
(verb-transitive)
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To divert the energy associated with (an unacceptable impulse or drive) into a personally and socially acceptable activity.
(verb-transitive)
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Chemistry To transform directly from the solid to the gaseous state or from the gaseous to the solid state without becoming a liquid.
(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.