ultraviolet

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays
  2. adjective having or employing wavelengths shorter than light but longer than X-rays; lying outside the visible spectrum at its violet end

Etymology

From ultra- (“beyond”) + violet (“violet”).

Synonyms

ultraviolet radiation, ultraviolet light, ultraviolet illumination, UV

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