batholith in British English
(ˈbæθəlɪθ) or batholite (ˈbæθəˌlaɪt)
nouna very large irregular-shaped mass of igneous rock, esp granite, formed from an intrusion of magma at great depth, esp one exposed after erosion of less resistant overlying rocks
Derived forms
batholithic (ˌbathoˈlithic) or batholitic (ˌbathoˈlitic) adjective