What does ecchymoses mean?
Ecchymoses are the flat, discolored patches that appear on skin or mucous membranes when blood leaks from damaged vessels into the surrounding tissue — in plain terms, bruises. Ranging in color from red-purple through blue-black to greenish-yellow as they heal, they result from trauma but may also arise spontaneously in people with clotting disorders, fragile vessels, or certain medications such as anticoagulants. The word is the plural of "ecchymosis" and carries a distinctly clinical tone: doctors use it in examinations and case notes where precision matters, often alongside related terms like "petechiae" (pinpoint dots) and "hematoma" (a raised collection of clotted blood). Derived from Greek roots meaning an escape of fluid into tissue, it entered English medical vocabulary via Latin in the early modern period. For general readers, knowing this term offers a precise, professional alternative to "bruises" whenever discoloration from bleeding needs careful description.
noun (plural of ecchymosis)Plural of "ecchymosis": discolored patches of skin or mucous membrane caused by bleeding beneath the surface, typically resulting from bruising. Larger and deeper than petechiae, these purplish, blue, or yellowish marks fade over days as the trapped blood is reabsorbed.
- Flat, discolored patches of skin produced by blood escaping into the tissues beneath, as in bruising; the clinical term for bruises, especially when multiple or medically significant.
- In broader medical usage, similar discolorations occurring on mucous membranes or internal surfaces.
"The elderly patient presented with extensive ecchymoses along both forearms after the fall."
"The boxer's face was marked by vivid ecchymoses around the eyes and jaw."
"The physician noted scattered ecchymoses on the patient's arms and ordered coagulation studies to investigate the spontaneous bleeding."
"Ecchymoses" is itself a plural noun; use "ecchymosis" when referring to a single lesion. Both forms take standard verb agreement: "an ecchymosis appears," but "ecchymoses appear."
"A single ecchymosis appeared on her shin, but within days multiple ecchymoses had spread across both legs."
That dramatic darkening under both eyes — 'raccoon eyes' — that doctors look for in skull fractures has a name straight out of ancient Greek: ecchymoses.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of ecchymoses
Ecchymoses derives ultimately from the Greek ekchymōsis, formed from ek- ("out") plus chymos ("juice" or "fluid"), literally meaning an outpouring of fluid into the tissues. The term passed into New Latin before being adopted into English medical usage in the early modern period, first recorded in the seventeenth century. It shares its Greek root with "chyle" and "chyme," words likewise describing body fluids.
Related word forms
How ecchymoses is actually used
"Ecchymoses" is the standard plural of "ecchymosis" and belongs to formal medical register; in everyday speech people simply say "bruises." Clinicians favor it for precision, particularly when describing multiple lesions, documenting trauma, or distinguishing findings during physical examination. The singular should not be used as if it were plural, a common error among non-specialists.
Easily confused with ecchymoses
Petechiae are tiny pinpoint spots (under about 3 mm) caused by small capillary bleeds, whereas ecchymoses are larger, flat, bruise-like patches.
A hematoma is a solid swelling or lump of clotted blood within tissue, while an ecchymosis is a flat, non-raised discoloration of the skin.