mon ‧ o ‧ lith ‧ ic /ˌmɒnəˈlɪθɪk◂ $ ˌmɑː-/ BrE AmE adjective
1 . a monolithic building is very large, solid, and impressive
2 . a monolithic organization, political system etc is very large and powerful and difficult to change:
a monolithic movie company