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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
Borrowed from French azote, from Ancient Greek ἀ- (a-, “without”) + ζωή (zōḗ, “life”) + -τικός (-tikós, “adjective suffix”). Named by French chemist and biologist Antoine Lavoisier, who saw it as the part of air which cannot sustain life.
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Classic usage
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