淤血 yūxuè clotted blood Origin Definitions Defs Strokes Stroke Words Sentences Sents 淤 yū noun to be stagnant to become clogged or stagnant; (specifically of blood) to form a clot or hematoma; extravasated blood血 xuè noun blood The red fluid that circulates in the heart and blood vessels; used in formal contexts, compounds, or when used alone in spoken language.