me·nin·gi·o·ma
| \ mə-ˌnin-jē-ˈō-mə
\
plural meningiomas
also meningiomata\ mə-ˌnin-jē-ˈō-mə-tə
\
: a slow-growing encapsulated typically benign tumor arising from the meninges and often causing damage by pressing upon the brain and adjacent parts