diapedesis

noun

: the passage of blood cells through capillary walls into the tissues

Word History

Etymology

New Latin, from Greek diapēdēsis, literally, act of leaping through, from diapēdan to leap through, from dia- + pēdan to leap

First Known Use

1625, in the meaning defined above

Time Traveler
The first known use of diapedesis was in 1625

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Cite this Entry

“Diapedesis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diapedesis. Accessed 7 Jul. 2026.

Medical Definition

diapedesis

noun
: the passage of blood cells through capillary walls into the tissues

called also emigration

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