[rhy.o.lite] n [G Rhyolith, fr. Gk rhyax stream, stream of lava (fr. rhein) + G -lith -lite] (1868): a very acid volcanic rock that is the lava form of granite -- rhy.o.lit.ic adj
RHYOLITE
Meaning of RHYOLITE in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012