leucocyte

/ˈluːkəˌsaɪt/
noun
  1. A white blood cell that helps the body fight infection and disease.
    • Leucocytes are an important part of the immune system.
    • The doctor explained that a high leucocyte count can indicate an infection.
    • When you get sick, your body produces more leucocytes to fight the germs.
Synonyms
What does "leucocyte" mean? | whatsthatwordmean | whatsthatwordmean