[1] : The Collaborative International Dictionary of English v.0.48

batholith \bath"olith\ ba^th"-oli^th, n. gr. baqo`s
   depth + -lith.
   a large mass of intrusive igneous rock believed to have
   solidified deep within the earth.

   syn: batholite, pluton, plutonic rock.
        wordnet 1.5

[2] : WordNet (r) 2.0

batholith
     n : large mass of intrusive igneous rock believed to have
         solidified deep within the earth syn: batholite, pluton,
          plutonic rock
see also:
batholite pluton plutonic rock 

Batholith >> B Words
Batholith, definition of term: Batholith
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