What term describes an abnormal condition of the blood?

The term that describes an abnormal condition of the blood is "dyscrasia." This word specifically refers to a disorder involving the blood or bone marrow and indicates an imbalance or abnormality in the composition of blood components, such as red blood cells, white blood cells, or platelets. Dyscrasias can manifest in various ways, including conditions like anemia, leukopenia, or thrombocytopenia.

In contrast, hemorrhage pertains to blood loss, thrombosis refers to the formation of a blood clot within a blood vessel that obstructs blood flow, and embolism relates to a blockage caused by a clot or other material traveling through the bloodstream. While these concepts are integral to understanding blood-related conditions, they do not specifically denote an abnormal condition of the blood itself—making dyscrasia the most precise term for such a state.