Found 2 items, similar to plutonic rocks.
English → English (WordNet) Definition: plutonic rock plutonic rock n : large mass of intrusive igneous rock believed to have solidified deep within the earth [syn: batholith, batholite, pluton]
English → English (gcide) Definition: plutonic rocks Intrusive \In*tru"sive\, a. Apt to intrude; characterized by intrusion; entering without right or welcome. [1913 Webster] Intrusive rocks (Geol.), rocks which have been forced, while in a plastic or melted state, into the cavities or between the cracks or layers of other rocks. The term is sometimes used as equivalent to plutonic rocks. It is then contrasted with effusive or volcanic rocks. -- In*tru"sive*ly, adv. -- In*tru"sive*ness, n. [1913 Webster]