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retina Etymology Atlas
The light-sensitive layer at the back of the eye that sends images to the brain. Pro
Word
Root
Affix
Tap any word to open its Atlas. Pinch to zoom, drag to pan.
retina is a Level B2 word — Pro only
Pro unlocks the Etymology Atlas for levels A2–C2 — plus FSRS-5 spaced repetition, mastery tracking, and the activity dashboard.