Read Edit View history 凝灰岩 nínghuīyán tuff Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 凝灰岩 nínghuīyán tuff A type of volcanic rock formed from the accumulation and consolidation of volcanic ash, dust, sand, and clay; often reddish-brown, yellow, or gray in color. Edit Delete References Add reference No references for this word.
凝灰岩 nínghuīyán tuff A type of volcanic rock formed from the accumulation and consolidation of volcanic ash, dust, sand, and clay; often reddish-brown, yellow, or gray in color. Edit Delete