< /ˌɛk əˈmoʊ siz/. Pathology.
- a discoloration due to extravasation of blood, as in a bruise.
noun plural -ses (-siːz)
- discoloration of the skin through bruising
n. pl. ec•chy•mo•ses (-sēz′)
- The passage of blood from ruptured blood vessels into subcutaneous tissue, marked by a purple discoloration of the skin.