| any of various nearly colorless cells of the immune system that circulate mainly in the blood and lymph and participate in reactions to invading microorganisms or foreign particles, comprising the B cells, T cells, macrophages, monocytes, and granulocytes. |
leu·ko·cyte also leu·co·cyte (lōō'kə-sīt') n. See white blood cell. leu'ko·cyt'ic (-sĭt'ĭk) adj., leu'ko·cy'toid' adj. |
leukocyte leu·ko·cyte or leu·co·cyte (l&oomacr;'kə-sīt')
n.
See white blood cell.
white blood cell n.
Abbr. WBC
Any of the colorless or white cells in the blood that have a nucleus and cytoplasm and help protect the body from infection and disease through specialized neutrophils, lymphocytes, and monocytes. Also called leukocyte, white corpuscle.