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pre-ejection period

[ prē′ĭ-jĕkshən ]
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n.
The interval in the electrocardiogram between the onset of the QRS complex and cardiac ejection.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

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