agate

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun an impure form of quartz consisting of banded chalcedony; used as a gemstone and for making mortars and pestles

Etymology

From Middle French agathe, from Latin achatēs, from Ancient Greek ἀχάτης (akhátēs, “agate”).

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