< /ˌɛk əˈmoʊ siz/. Pathology.

  1. a discoloration due to extravasation of blood, as in a bruise.

noun plural -ses (-siːz)

  1. discoloration of the skin through bruising

n. pl. ec•chy•mo•ses (-sēz′)

  1. The passage of blood from ruptured blood vessels into subcutaneous tissue, marked by a purple discoloration of the skin.
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