Read Edit View history 氘 dāo deuterium Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 氘 dāo deuterium deuterium; an isotope of hydrogen, also called 重氢 zhòngqīng Edit Delete References Add reference same_as 氘/氘 → 重氢/重氫 Edit Delete same_as 重氢/重氫 → 氘/氘 Edit Delete