IGNEOUS ROCK

Pronunciation (US): (GB):

Meaning:

Rock formed by the solidification of molten magma

Classified under:

Nouns denoting substances

Hypernyms ("igneous rock" is a kind of...):

rock; stone (material consisting of the aggregate of minerals like those making up the Earth's crust)

Meronyms (substance of "igneous rock"):

sodalite (a vitreous mineral consisting of sodium aluminum silicate and sodium chloride in crystalline form; occurs in igneous rocks)

Hyponyms (each of the following is a kind of "igneous rock"):

andesite (a dark grey volcanic rock)

aplite (light-colored and fine-grained granitic rock consisting chiefly of quartz and feldspars)

groundmass ((geology) the matrix of fine-grained crystalline material in which larger crystals are embedded)

adesite (dark greyish extrusive rock)

batholite; batholith; pluton; plutonic rock (large mass of intrusive igneous rock believed to have solidified deep within the earth)

diorite (a granular crystalline intrusive rock)

gabbro (one of a family of granular intrusive rocks)

pegmatite (a form of igneous rock consisting of extremely coarse granite resulting from the crystallization of magma rich in rare elements)

peridotite (a dark coarse-grained igneous rock consisting principally of olivine)

rhyolite (very acid volcanic rock)

volcanic rock (extrusive igneous rock solidified near or on the surface of the Earth)

porphyritic rock; porphyry (any igneous rock with crystals embedded in a finer groundmass of minerals)