Diapedesis

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Diapedesis \Di`a*pe*de"sis\, n. [NL., fr. Gr. ? a leaping or
     oozing through, fr. ? to leap through; dia` through + ? 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.


     [1913 Webster]

From WordNet (r) 2.0 [wn]:

  diapedesis
       n : passage of blood cells (especially white blood cells)
           through intact capillary walls and into the surrounding
           tissue