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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From Middle English prolongacioun, from Old French prolongation, from Late Latin prōlongātiō, from prōlongātus, perfect passive participle of Latin prōlongō, from prō + longus. By surface analysis, prolong + -ation.
protraction, perpetuation, lengthening
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Classic usage
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