sodium

Từ điển Oxford Advanced Learner 8th

so·dium BrE [ˈsəʊdiəm] NAmE [ˈsoʊdiəm] noun uncountable (symb. Na)
a chemical element. Sodium is a soft silver-white metal that is found naturally only in ↑compounds, such as salt.

Word Origin:
[sodium] early 19th cent.: from ↑soda + -ium.

• Từ đồng nghĩa / Synonyms:
  Na, atomic number 11