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1. Obstruction or occlusion of a blood vessel by an embolus.
2. An embolus.
[Middle English embolisme, insertion of one or more days in a calendar, from Late Latin embolismus, from Greek embolismos, from emballein, to insert; see emblem.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.