Definition of rhyolite
: a very acid volcanic rock that is the lava form of granite
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Recent Examples of rhyolite from the Web
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The highlight of the park is of course the gorge, where walls of red-gray rhyolite schist, a hard volcanic rock, rise up to 40 feet along the Eau Claire River.
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Sept. 9 Leslie Gulch trip: Meet at the WinCo parking lot at Meridian Road and I-84 at 7:30 a.m. Saturday, Sept. 9, for an 8 a.m. departure. Sculpted rhyolite and geology with Oregon State geologist Mark Ferns.
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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.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'rhyolite.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of rhyolite
German Rhyolith, from Greek rhyax stream, stream of lava (from rhein) + German -lith -lite
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See words that rhyme with rhyolite Britannica.com: Encyclopedia article about rhyolite
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