dilate
B1CEFR level
25/100Rarity: fairly common
TechnicalRegister
To make the pupil widen, either naturally in dim light or with drops for examination.
I'm going to dilate your pupils, and your vision will stay blurry for a few hours afterwards.
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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