diapedesis
/ˌdaɪəpəˈdiːsɪs/noun
mass noun
- Medicine the passage of blood cells through the intact walls of the capillaries, typically accompanying inflammation【医】血细胞渗出（多伴随有炎症）。
词源
early 17th cent.: modern Latin， based on Greek dia 'through' + pēdan 'throb or leap'.