河豚毒素 hétúndúsù tetrodotoxin Origin Definitions Defs Strokes Stroke Words Sentences Sents 河豚 hétún pufferfish pufferfish; blowfish; globefish. Any of various fish known for their ability to inflate themselves and for having toxic organs despite being a delicacy. Also written 河鲀 hétún.毒素 dúsù noun toxin poisonous substance produced by living organisms