his·ti·o·cyte 
(hĭstē-ə-sīt′)
(hĭstē-ə-sīt′)n.
A macrophage or dendritic cell that is usually immobile and is found in organs and tissues.
[Greek histion, web, diminutive of histos; see stā- in the Appendix of Indo-European roots + -CYTE.]
his′ti·o·cytic (-sĭtĭk) adj.