Hypertext Webster Gateway: "andesite"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Andesite \An"des*ite\, n. (Min.)
An eruptive rock allied to trachyte, consisting essentially
of a triclinic feldspar, with pyroxene, hornblende, or
hypersthene.
From WordNet (r) 1.7 (wn)
andesite
n : a dark gray volcanic rock
Additional Hypertext Webster Gateway Lookup
Gateway by dict@stokkie.net
stock only wrote the gateway and does not have any control over the contents;
see the Webster Gateway FAQ,
and also the Back-end/database links and credits.