Share this entry

Share this page

rhyolite

Line breaks: rhyo|lite
Pronunciation: /ˈrʌɪəlʌɪt
 
/

Definition of rhyolite in English:

noun

[mass noun] Geology
A pale fine-grained volcanic rock of granitic composition, typically porphyritic in texture.
Example sentences
  • A trail up the east side of the mountain, on public land, can still be taken, but collecting is now much more difficult in the limited amount of solid, unbroken rhyolite exposed on the summit.
  • The conglomerate was deposited in tributary stream channels, and the pebbles consist almost entirely of quartz-feldspar phenocrystic rhyolite.
  • The only thing that bothered me about the book was in vignette 18, describing Garnet Hill, where garnet crystals in rhyolite can still be collected.

Origin

mid 19th century: from German Rhyolit, from Greek rhuax 'lava stream' + lithos 'stone'.

Definition of rhyolite in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day odium
Pronunciation: ˈəʊdɪəm
noun
widespread hatred or disgust for someone…