noun
hematoma; haematoma
Medical term for a localized collection of blood outside blood vessels, usually clotted. Used in clinical contexts.
転倒して頭に血腫ができた。
I fell and developed a hematoma on my head.
手術後に血腫が形成されることがある。
A hematoma may form after surgery.
Compound of 血 (ketsu, 'blood') and 腫 (shu, 'swelling, tumor'). A straightforward medical kanji compound.