一氧化二氮 Save Create a free account to save words yīyǎnghuàèrdàn ㄧ ㄧㄤˇ ㄏㄨㄚˋ ㄦˋ ㄉㄢˋ nitrous oxide N2O laughing gas Character by character 一(yī)one 氧(yǎng)oxygen 化(huà)make into 二(èr)two 氮(dàn)nitrogen Sign up for a free account to save words and review them A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0