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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From German Zirkon, possibly via French zircon, formed in the 1780s from Arabic زَرْقُون (zarqūn), borrowed from Middle Persian zlgwn' (/zargōn/). Doublet of jargoon.
zirconium silicate
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Classic usage
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