Search Result for "extrusive": 
Wordnet 3.0

ADJECTIVE (1)

1. of rock material; forced out while molten through cracks in the earth's surface; 



The Collaborative International Dictionary of English v.0.48:

Extrusive \Ex*tru"sive\, a. [See Extrude.] (Geol.)
   Forced out at the surface; as, extrusive rocks; -- contrasted
   with intrusive.
   [Webster 1913 Suppl.]


WordNet (r) 3.0 (2006):

extrusive
    adj 1: of rock material; forced out while molten through cracks
           in the earth's surface [ant: intrusive]