Medical Root
leuk/o
leuk/o means white (from the Greek).
What does leuk/o mean?
Leuk/o is a word root that means white. It comes from the Greek word for white and is used in medical terms that relate to whiteness, most often the white blood cells.
The best-known example is leukocyte, which means white blood cell. Leukaemia (also spelled leukemia) is a cancer involving white blood cells. When you see leuk/o, it usually points to something white or, very often, to the white cells of the blood that help fight infection.
Leuk/o is a useful root to know because white blood cells appear so often in medicine. It pairs naturally with roots and suffixes relating to blood and cells.
Example words using leuk/o
Related word parts
Frequently asked questions
What does leuk/o mean?
Leuk/o is a root meaning white.
What does leukocyte mean?
It means white blood cell.
What does leukopenia mean?
It means a low white blood cell count.
Where does leuk/o come from?
It comes from the Greek word for white.
Study reference only — not medical advice. Always consult qualified sources for clinical decisions.