The story
From hemato- + -oma. Among the many words derived from -oma that are in current common use, this word is one of only a few that do not denote a neoplasm; another is granuloma.
Etymology from Wiktionary, CC BY-SA 4.0.
hematoma
Today it means: A swelling of blood, usually clotted, which forms as a result of broken blood vessels. Full definition →