碳酸气 tànsuānqì carbon dioxide Definitions Defs Origin Strokes Stroke Words Sentences Sents 碳酸 tànsuān carbonic acid carbonic acid; a weak inorganic acid formed by dissolving 二氧化碳 èryǎnghuàtàn in water, used in making soft drinks and chemicals气 氣 qì noun gas gas; air; the state of matter that is neither liquid nor solid