/ Thesaurus / B Synonyms of batholite Find synonyms for: Noun1. batholith, batholite, pluton, plutonic rock, igneous rockusage: large mass of intrusive igneous rock believed to have solidified deep within the earthWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language