Definition of rhyolite
: a very acid volcanic rock that is the lava form of granite
rhyoliticplay \ˌrī-ə-ˈli-tik\ adjective
Recent Examples of rhyolite from the Web
The Kaharoa eruption would have been impressive to see, producing ~5-7 km3 of rhyolite over what is thought to be a few years time.
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Origin and Etymology of rhyolite
German Rhyolith, from Greek rhyax stream, stream of lava (from rhein) + German -lith -lite
First Known Use: 1861
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