Longman Dictionary of Contemporary English homepage

Date: 1800-1900
Language: Modern Latin
Origin: fluor; FLUORESCENT

fluorine

 noun
     
flu‧o‧rine [uncountable]
a chemical substance that is usually in the form of a poisonous pale yellow gas. It is a chemical element: symbol F
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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