氮芥气 Traditional form: 氮芥氣 Pinyin (reading): dànjièqì Definitions: nitrogen mustard Characters: 氮 - nitrogen 芥 - mustard, broccoli 气 - air, gas; steam, vapor; anger Traditional characters: 氮 - nitrogen 芥 - mustard, broccoli 氣 - air, gas; steam, vapor; anger