ni‧tro‧gen /ˈnaɪtrədʒ
ən/
noun [uncountable][
Date: 1700-1800;
Language: French;
Origin: nitrogène, from nitre (NITIC ACID) + -gène 'producing']
a gas that has no colour or smell, and that forms most of the Earth’s air. It is a chemical
element: symbol N
[TahlilGaran] Dictionary of Contemporary English ▲