optic disc
C2CEFR level
82/100Rarity: very rare
TechnicalRegister
The point at the back of the eye where the optic nerve fibres leave the retina, seen as a pale circle on fundoscopy.
The optic disc margins were blurred, raising the possibility of papilloedema.
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.
Get words like optic disc on your lock screen, a few a day, with review that makes them stick.
Download on the App Store Lexfall puts a new word on your home and lock screen through widgets, so you learn without opening an app. Free to download. After a free trial, a subscription unlocks every field. Built for iPhone, iOS 15.1 or later.
On a computer?Scan with your iPhone camera.