retinal

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun either of two yellow to red retinal pigments formed from rhodopsin by the action of light
  2. adjective in or relating to the retina of the eye

Etymology

From retina + -al (“of or pertaining to”).

Synonyms

retinene

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