di·a·pe·de·sis  (dī'ə-pĭ-dē'sĭs)  n. pl. di·a·pe·de·ses (-sēz) The movement or passage of blood cells, especially white blood cells, through intact capillary walls into surrounding body tissue. [Greek diapēdēsis, transudation, from diapēdān, to ooze through : dia-, dia- + pēdān, to leap, throb; see ped- in Indo-European roots.] di'a·pe·det'ic (-dět'ĭk) adj. |