plutonic rock plutonic • Plutonion · · · Info · Definitions · Synonyms · Characters · · plutonic rock · · Text Common · · Latin · · Scripts 13 · · Length 4 · · Syllables Definitions · · · (noun) large mass of intrusive igneous rock believed to have solidified deep within the earth. Synonyms: batholith, batholite, pluton, plutonic rock. · · Noun Definition 1 Synonyms · · · batholith · · Synonym 1 batholite · · Synonym 2 pluton · · Synonym 3 Characters · · space U+0020 c latin small letter c U+0063 i latin small letter i U+0069 k latin small letter k U+006B l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075