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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From French coefficient. Coined by French mathematician François Viète. Or influenced by (New) Latin coefficient-, which is the stem of coefficiens, which is a substantivation of the present active participle of coefficio, which comes from co- and efficio.
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Classic usage
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