Longman Dictionary of Contemporary English homepage

Date: 1800-1900
Language: Modern Latin
Origin: soda

sodium

 noun
     
Related topics: Elements
so‧di‧um [uncountable]
HCE a common silver-white metal that usually exists in combination with other substances, for example in salt. It is a chemical element: symbol Na
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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