Noun
large mass of intrusive igneous rock believed to have solidified deep within the earth
Source: WordNetDuring the initial collision of the Asia and Indian plates, this granitic batholith was buried to depths of about convert or more, highly metamorphosed, highly deformed, and partially remelted during the Eocene Period to form gneiss. Source: Internet
Surface expression and erosion A batholith is an exposed area of (mostly) continuous plutonic rock that covers an area larger than 100 square kilometers (40 square miles). Source: Internet