氘
How to Say
How to Write
Meaning: deuterium 2H
💡 Think 'dao' as 'dough'—heavy like deuterium is heavier than regular hydrogen.
Compounds
Character Story & Explanation
氘 (dāo) is a Chinese character meaning 'deuterium,' the heavy isotope of hydrogen with one proton and one neutron. It is formed by combining the radical 气 (gas) with the phonetic component 刀 (knife). Deuterium is used in nuclear fusion and as a tracer in chemistry, analogous to the Western term 'deuterium' from Greek 'deuteros' (second).
Example Sentences
Common Compounds
Similar Characters — Don't Mix These Up
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