资料来源 : pyDict

火山岩之一种

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Rhyolite \Rhy"o*lite\, n. [Gr. "rei^n to flow + -lite.] (Min.)
   A quartzose trachyte, an igneous rock often showing a fluidal
   structure. -- {Rhy`o*lit"ic},, a.

资料来源 : WordNet®

rhyolite
     n : very acid volcanic rock