二氧化碳
èryǎng-huàtàn
carbon dioxide
Every meaning
èryǎng-huàtàn
- carbon dioxide
Its characters
- 二èrtwo
- 氧yǎngoxygen
- 化huàto change; to transform
- 碳tàncarbon
Words with 二
Words with 氧
Meanings are from Mandarin The Wild’s own dictionary. Levels follow the official HSK word list (the exam’s 2025 syllabus, levels 7–9 shown together).