ecchymosis
noun
ec·chy·mo·sis ˌe-ki-ˈmō-səs 
plural ecchymoses ˌe-ki-ˈmō-ˌsēz
: the escape of blood into the tissues from ruptured blood vessels
ecchymotic
ˌe-ki-ˈmä-tik
adjective 
Example Sentences
Recent Examples on the Web These look quite different from ecchymoses, which have a blotchy appearance. 
Consumer Reports, Washington Post, 19 Aug. 2017
Consumer Reports, Washington Post, 19 Aug. 2017 Word History
Etymology
borrowed from New Latin, borrowed from Greek ekchȳ́mōsis, from ekchȳmō-, stem of ekchȳmoûsthai "to extravasate blood" (from ek- ec- + -chȳmousthai, verbal derivative of chȳmós "juice of plants, animal or plant fluid, humor") + -sis -sis — more at chyme
First Known Use
1541, in the meaning defined above
Medical Definition
ecchymosis
noun
ec·chy·mo·sis ˌek-ə-ˈmō-səs
plural ecchymoses -ˌsēz
: the escape of blood into the tissues from ruptured blood vessels marked by a livid black-and-blue or purple spot or area
also : the discoloration so caused
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