EXTRUSIVE

Pronunciation (US): (GB):

Meaning:

Of rock material; forced out while molten through cracks in the earth's surface

Classified under:

Similar:

volcanic (igneous rock produced by eruption and solidified on or near the earth's surface; rhyolite or andesite or basalt)

Domain category:

geology (a science that deals with the history of the earth as recorded in rocks)

Antonym:

intrusive (of rock material; forced while molten into cracks between layers of other rock)

Derivation:

extrude (form or shape by forcing through an opening)