trachybasalt

[ trey-kee-buh-sawlt, -bas-awlt, -bey-sawlt, trak-ee- ]

noun
  1. a fine-grained volcanic rock containing sanidine and calcic plagioclase.

Origin of trachybasalt

1
First recorded in 1885–90; trachy- + basalt

Words Nearby trachybasalt

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023