[peg.ma.tite] n [F, fr. Gk pegmat-, pegma something fastened together, fr. pegnynai to fasten together--more at pact] (ca. 1828): a coarse variety of granite occurring in dikes or veins -- peg.ma.tit.ic adj
PEGMATITE
Meaning of PEGMATITE in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012