from The Century Dictionary and Cyclopedia
- Composed of serum with an admixture of blood.
Sorry, no etymologies found.
And if you zoom in'she does-you can see that before she was cleaned up, there's serosanguineous fluid on the surface of the abrasion.
Toxicology reports completed last week reveal that he died of a cardiac dysrhythmia due to "serosanguineous pericardial effusion," which means the vessels around his heart burst, a spokesman for the medical examiner's office said.