黑曜岩 hēiyàoyán obsidian Definitions Defs Origin Strokes Stroke Words Sentences Sents 黑曜岩 hēiyàoyán obsidian A type of natural volcanic glass formed when lava cools rapidly, typically black or dark green in color with a glass-like shine. Frequency Written text 0.008 per million Sources Frequency data BCC Corpus (BLCU)
黑曜岩 hēiyàoyán obsidian A type of natural volcanic glass formed when lava cools rapidly, typically black or dark green in color with a glass-like shine. Frequency Written text 0.008 per million Sources Frequency data BCC Corpus (BLCU)
