rhyolite
noun
rhy·o·lite ˈrī-ə-ˌlīt 
: a very acid volcanic rock that is the lava form of granite
rhyolitic
ˌrī-ə-ˈli-tik
adjective 
Example Sentences
Recent Examples on the Web And another outcrop in the valley below, Craig Rhos-y-felin, supplied most of the rhyolite. 
Jennifer Ouellette, Ars Technica, 8 Mar. 2022 Bluestone, as a category of rock, contains two major subcategories, rhyolite and dolerite, neither of which occurs naturally near Stonehenge. Simon Akam, The New Yorker, 15 Feb. 2022 Painted onto this rich, ever-shifting canvas is a broader story about freedom, hope, loss, and messy morality; about the American Dream crashing onto rhyolite rocks. Toby Skinner, Condé Nast Traveler, 24 Apr. 2020 This is surprisingly similar to the contrasting magmas that long ago erupted from the nearby Yellowstone volcanoes, and the light-colored rhyolites of both systems change in age from one end of the volcanic chain to the other. National Geographic, 29 July 2019 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. Chelsey Lewis, Milwaukee Journal Sentinel, 2 Nov. 2017 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. Michelle Jenkins, idahostatesman, 25 Aug. 2017 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. Erik Klemetti, WIRED, 10 Feb. 2011 See More
Jennifer Ouellette, Ars Technica, 8 Mar. 2022 Bluestone, as a category of rock, contains two major subcategories, rhyolite and dolerite, neither of which occurs naturally near Stonehenge. Simon Akam, The New Yorker, 15 Feb. 2022 Painted onto this rich, ever-shifting canvas is a broader story about freedom, hope, loss, and messy morality; about the American Dream crashing onto rhyolite rocks. Toby Skinner, Condé Nast Traveler, 24 Apr. 2020 This is surprisingly similar to the contrasting magmas that long ago erupted from the nearby Yellowstone volcanoes, and the light-colored rhyolites of both systems change in age from one end of the volcanic chain to the other. National Geographic, 29 July 2019 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. Chelsey Lewis, Milwaukee Journal Sentinel, 2 Nov. 2017 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. Michelle Jenkins, idahostatesman, 25 Aug. 2017 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. Erik Klemetti, WIRED, 10 Feb. 2011 See More Word History
Etymology
German Rhyolith, from Greek rhyax stream, stream of lava (from rhein) + German -lith -lite
First Known Use
1861, in the meaning defined above
- fiddle-faddle
- fiddle-footed
- fiddle-leaf fig
- fiddle-neck
- fiddleback
- fiddleback chair
- fiddlebacks
- fiddled
- fiddled (around)
- fiddled (with)
- fiddled about
- fiddled around
- fiddled away
- fiddled with
- fiddledeedee
- fiddlehead
- fiddleheaded
- fiddleheads
- fiddlenecks
- fiddler
- fiddler beetle
- fiddler crab
- Fiddler's Green
- fiddlers
- fiddles