Definitions

1. adjective

relating to or denoting a type of igneous rock that is light in colour and has a porphyritic texture, typically formed from the rapid cooling of viscous lava.

“The geologist examined the rhyolitic samples collected from the volcanic region.”

2. noun

a type of igneous rock that is light in colour and has a porphyritic texture, typically formed from the rapid cooling of viscous lava.

“The rhyolitic rocks found in this area are an important source of valuable minerals.”