pl. -·mas or -·mata
a firm, tumorlike granulation formed as a reaction to chronic inflammation, as from foreign bodies, bacteria, etc.
Origin of granulomagranul(e) + -oma
nounpl. gran·u·lo·mas or gran·u·lo·ma·ta
Any of various nodular masses of granulocytic monocytes and other immune cells, including macrophages and eosinophils, that aggregate in response to a chronic infection, such as tuberculosis, or other inflammatory process.