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To increase the speed of.
(verb-transitive)
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To cause to occur sooner than expected.
(verb-transitive)
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To cause to develop or progress more quickly: a substance used to accelerate a fire.
(verb-transitive)
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To reduce the time required for (an academic course, for example); compress into a shorter period.
(verb-transitive)
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To make it possible for (a student) to finish an academic course faster than usual.
(verb-transitive)
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.