Definition from Wiktionary, the free dictionary
- Rhymes: -eɪdʒ
macrophage (plural macrophages)
- (immunology, cytology) A white blood cell that phagocytizes necrotic cell debris and foreign material, including viruses, bacteria, and tattoo ink. It presents foreign antigens on MHC II to lymphocytes. Part of the innate immune system.
type of white blood cell