Hematomas

Part of speech: noun

Definitions

1. A localized collection of blood outside blood vessels, typically resulting from trauma; a swelling that appears when blood accumulates in tissues due to injury; an accumulation of clotted blood that leads to visible discoloration and tenderness of the skin or underlying structures in the affected area
2. A mass formed by blood pooling in tissues after damage to blood vessels, often presenting as a bruise; a collection of blood that can cause pain and swelling at the site of injury; a form of bruising resulting from both traumatic and non-traumatic events that can vary in size and severity
3. A blood-filled pocket that occurs when vessels are ruptured, leading to localized swelling and possible pain; a result of injuries where blood seeps into surrounding tissues causing discoloration; an area where blood has clotted outside of circulation owing to force or physical impact, manifesting as a painful lump

Etymology: "Hematomas" is the plural of "hematoma," a noun built from the combining form "hemato-" (from Greek "haima," blood) and the suffix "-oma." That suffix, from Greek, is the one behind most medical words for tumours, which makes "hematoma" an unusual member of the family: it denotes a swelling of blood rather than a growth of cells. Among the many words ending in "-oma" in common use, only a handful, such as "granuloma," fail to name a neoplasm, so the ending here is a reminder that the suffix was never strictly limited to cancers. The sense of the word is simple once the parts are clear. Blood that escapes a ruptured vessel collects in surrounding tissue, forming a pocket that swells, discolours the skin and can ache. The Greek-based formation is a technical coinage, so it does not come from ancient medical writers; it reflects the modern habit of building precise terms from classical roots.

Synonyms: bruises, contusions, blood clots