Ecchymosis \Ec`chy*mo"sis\, n.; pl. {Ecchymoses}. [NL., fr. Gr.
?, fr. ? to extravasate; 'ek out of + ? to pour.] (Med.)
A livid or black and blue spot, produced by the extravasation
or effusion of blood into the areolar tissue from a
contusion.
[1913 Webster]