diapedesis

[ dahy-uh-pi-dee-sis ]

Phonetic (Standard)IPA

noun

, Physiology.

the passage of blood cells, especially leukocytes, through the unruptured walls of the capillaries into the tissues.

diapedesis

/ ˌdaɪəpəˈdɛtɪk; ˌdaɪəpəˈdiːsɪs /

the passage of blood cells through the unruptured wall of a blood vessel into the surrounding tissues

1615–25; < New Latin < Greek diapḗdēsis a leaping through, equivalent to diapēdē- (verbid stem of diapēdân to leap through) + -sis -sis

C17: New Latin, from Greek: a leaping through, from diapēdan to spring through, from dia- + pēdan to leap

To the number of these there is possibly an addition by the immigration from below (diapedesis) of leucocytes.

It is supposed that in many such cases the hemorrhage is due to diapedesis, and not to rupture of a blood-vessel (rhexis).

Henry ab Heer records the case of a man who not only laboured under diapedesis, but small worms accompanied the bloody secretion.

For five successive Fridays the same phenomenon appeared, when a confirmed diapedesis appeared.

The theory of blood pressure may apply to diapedesis accompanying the inflammatory process.

April 19, 2024tortuous

[tawr-choo-uhs ]

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