diapedesis Meaning, Definition & Usage

  1. noun passage of blood cells (especially white blood cells) through intact capillary walls and into the surrounding tissue

WordNet

Di`a*pe*de"sis noun
Etymology
NL., fr. Gr. a leaping or oozing through, fr. to leap through; through + to leap.
Definitions
  1. (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.

Webster 1913