What does the root "leuko" mean in medical terminology?

The root "leuko" in medical terminology means "white." This term is commonly found in various medical contexts, particularly in referencing white blood cells, such as in "leukocyte," which translates to "white cell." These cells are crucial for the body’s immune response and are a key component in fighting infections. Understanding this root helps clarify discussions involving conditions related to blood and immune function, as "leuko" is often used to designate the presence, absence, or levels of specific white blood cells in diagnostic tests.