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[dahy-uh-pi-dee-sis] /ˌdaɪ ə pɪˈdi sɪs/
noun, Physiology.
the passage of blood cells, especially leukocytes, through the unruptured walls of the capillaries into the tissues.
Origin of diapedesis
1615-25; < New Latin < Greek diapḗdēsis a leaping through, equivalent to diapēdē- (verbid stem of diapēdân to leap through) + -sis -sis
Related forms
[dahy-uh-pi-det-ik] /ˌdaɪ ə pɪˈdɛt ɪk/ (Show IPA),
adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for diapedesis


the passage of blood cells through the unruptured wall of a blood vessel into the surrounding tissues
Derived Forms
diapedetic (ˌdaɪəpəˈdɛtɪk) adjective
Word Origin
C17: New Latin, from Greek: a leaping through, from diapēdan to spring through, from dia- + pēdan to leap
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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diapedesis in Medicine

diapedesis di·a·pe·de·sis (dī'ə-pĭ-dē'sĭs)
The movement or passage of blood cells, especially white blood cells, through intact capillary walls into surrounding body tissue. Also called migration.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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