cornea
B1CEFR level
30/100Rarity: fairly common
TechnicalRegister
The transparent dome at the front of the eye that provides most of the eye's focusing power.
Fluorescein staining revealed a small abrasion on the inferior cornea.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
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