rhy·​o·​lite | \ ˈrī-ə-ˌlīt How to pronounce rhyolite (audio) \

Definition of rhyolite

: a very acid volcanic rock that is the lava form of granite

Keep scrolling for more

Other Words from rhyolite

rhyolitic \ ˌrī-​ə-​ˈli-​tik How to pronounce rhyolitic (audio) \ adjective

Examples of rhyolite in a Sentence

Recent Examples on the Web

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, "Dells of the Eau Claire is a gorgeous county park near Wausau," 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, "Pumpkins, football and FitOne…yep, September is just around the corner," 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, "The 1886 Eruption of Mt. Tarawera, New Zealand," 10 Feb. 2011

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.

See More

First Known Use of rhyolite

1861, in the meaning defined above

History and Etymology for rhyolite

German Rhyolith, from Greek rhyax stream, stream of lava (from rhein) + German -lith -lite

Keep scrolling for more

Learn More about rhyolite

Statistics for rhyolite

Look-up Popularity

Time Traveler for rhyolite

The first known use of rhyolite was in 1861

See more words from the same year

More from Merriam-Webster on rhyolite

Rhyming Dictionary: Words that rhyme with rhyolite

Britannica.com: Encyclopedia article about rhyolite

Comments on rhyolite

What made you want to look up rhyolite? Please tell us where you read or heard it (including the quote, if possible).


to complain fretfully

Get Word of the Day daily email!

Test Your Vocabulary

What's that Smell?! Quiz

  • wide eyed dog smelling rose
  • Someone who is hircine smells like a:
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!