硫酸钠 liúsuānnà sodium sulfate Origin Definitions Defs Strokes Stroke Words Sentences Sents 硫代硫酸钠 liúdàiliúsuānnà sodium thiosulfate sodium thiosulfate; sodium hyposulfide次亚硫酸钠 cìyàliúsuānnà sodium thiosulfate sodium thiosulfate (Na2S2O3); a chemical compound used in photography as a fixing agent commonly known as "hypo" or [[大苏打|大蘇打|da4 su1 da2]]