Denoting an exudate or a discharge composed of or containing serum and also blood.

Serosanguineous is a medical term used to describe a type of bodily fluid or discharge that is thin, watery, and pinkish in color. The term is typically used in reference to fluids that contain a mixture of both blood and serum, which is the clear, straw-colored liquid component of blood that remains after the blood cells and clotting factors have been removed.

Serosanguineous fluid may be seen in a variety of medical contexts, including in wounds or surgical incisions that are healing, in the pleural or peritoneal fluid that surrounds the lungs or abdominal organs, or in the drainage from certain types of medical tubes or catheters. The presence of serosanguineous fluid may be normal and expected in some cases, while in other cases it may indicate an underlying medical condition or complication that requires further evaluation and treatment.