turquoise

Reading level: hard

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun a blue to grey green mineral consisting of copper aluminum phosphate
  2. noun a shade of blue tinged with green

Etymology

From Middle French turquoise, from Old French (pierre) turquoise (“Turkish (stone)”), from turc + -ois. The stone, mined near Nishapur in the Khorasan region of Persia, was originally brought to Europe through Turkey. Doublet of Turkish.

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