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TOEFL IELTS BNC: 6287 COCA: 5881

nitrogen

Word family
Related topics: Elements
ni·tro·gen /ˈnaɪtrədʒən/ ●●○ noun [uncountableU]  
HCEHEa gas that has no colour or smell, and that forms most of the Earth’s air. It is a chemical element: symbol N 氮〔一种化学元素,符号为N
Examples from the Corpus
Origin nitrogen
(1700-1800) French nitrogène, from nitre (NITIC ACID) + -gène producing
ni·tro·gen noun
Chinese
Syllable
Corpus
TOEFL IELTS BNC: 6287 COCA: 5881
TOEFL IELTS BNC: 6287 COCA: 5881
TOEFL IELTS BNC: 6287 COCA: 5881
nitrogen
Gases: acetylene, ammonia, argon...
Describing chemicals and chemical processes: active, aerobic, alkaline...

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