heavy hydrogen

Etymology
An atom of said isotope weighs about 2 dalton; about twice as much as an atom of normal hydrogen (protium).

Noun

 * 1) deuterium.

Translations

 * Catalan: hidrogen pesant
 * Chinese:
 * Cantonese: 重氫
 * Mandarin: ,
 * Finnish:
 * French: hydrogène lourd
 * German: schwerer Wasserstoff
 * Icelandic: tvívetni, þungt vetni, þungavetni
 * Japanese:
 * Korean:, 이중수소(二重水素)
 * Romanian:
 * Russian: тяжёлый водоро́д
 * Swedish:
 * Tagalog: mabigat na idroheno, haydroheng mabigat