rhyolite

Definitions


[ˈrʌɪəlʌɪt], (Noun)

Definitions:
- a pale fine-grained volcanic rock of granitic composition, typically porphyritic in texture


Phrases:

Origin:
mid 19th century: from German Rhyolit, from Greek rhuax ‘lava stream’ + lithos ‘stone’




definition by Oxford Dictionaries