Origin of rhyoliteGerman rhyolit from Classical Greek rhyax, stream (of lava) + lithos, stone
Origin of rhyoliteGreek rhuāx stream ( from rhein to flow ; see sreu- in Indo-European roots.) -lite
(countable and uncountable, plural rhyolites)
Coined by Ferdinand von Richthofen as German Rhyolith, from Ancient Greek á¿¥ÎÏ‰ (rheÅ, “flow") + -lith (modified to -lite).