Or contusion; Patch of discoloration on the skin resulting from seepage of blood from damaged underlying vessels. It is caused by injury, usually a blow. The change in color of a bruise is due to degradation of hemoglobin in the tissues.An injury that doesn't break the skin but results in some discoloration; SYN. contusion.

Alternate (chiefly British) spelling for hematoma.

ETYM New Lat. Related to Hema-, and -oma.
(Alternate spelling: haematoma).
A localized swelling filled with blood; SYN. haematoma.
Swelling containing blood; bruise.
Accumulation of blood in the tissues, causing a solid swelling. It may be due to injury, disease or a blood clotting disorder such as hemophilia.