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Webster 1913 Edition
Diapedesis
‖
Diˊa-pe-de′sis
,Noun.
[NL., fr. Gr. [GREEK] a leaping or oozing through, fr. [GREEK] to leap through;
διά
through + [GREEK] to leap.] (Med.)
The passage of the corpuscular elements of the blood from the blood vessels into the surrounding tissues, without rupture of the walls of the blood vessels.