Found 2 items, similar to extrusive.
English → English (WordNet) Definition: extrusive extrusive adj : of rock material; forced out while molten through cracks in the earth's surface [ant: intrusive]
English → English (gcide) Definition: Extrusive Extrusive \Ex*tru"sive\, a. [See Extrude.] (Geol.) Forced out at the surface; as, extrusive rocks; -- contrasted with intrusive. [Webster 1913 Suppl.]