protium

US 
UK ['prəʊtɪəm]
  • n.【化】氕
  • Web马蹄果属;轻氢;氢元素
n.
1.
【化】氕

Sample Sentence

Definition:
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard