mu

Reading level: hard

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun the 12th letter of the Greek alphabet

Etymology

From Ancient Greek μῦ (mû), derived from Phoenician 𐤌𐤌 (mm /⁠mem⁠/, “water”). Doublet of mem.

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