WordReference Random House Unabridged Dictionary of American English © 2025
ig•nim•brite
(ig′nim brīt′),USA pronunciation n. [Petrol.]
- Rocksa fine-grained volcanic rock consisting mainly of welded shards of feldspar and quartz. Also called welded tuff.
- Latin ign(is) fire + imbr-, stem of imber rain, shower + -ite1
- 1932
'ignimbrite' also found in these entries (note: many are not synonyms or translations):