microglia

noun

glial cell located throughout the brain and spinal cord that play a role in immune response and maintaining homeostasis

Wiktionary

Pronunciation: /ˈmaɪ.kɹoʊˌɡli.ə/

noun

Etymology: Etymology tree Proto-Indo-European *mey-der.? Ancient Greek μικρός (mikrós)der. English micro- English glia English microglia From micro- + glia.

The glial cells of the immune system; they can function as phagocytes