endoscopy
C1CEFR level
60/100Rarity: rare
TechnicalRegister
A procedure using a flexible camera to inspect the inside of the gut, most often the upper digestive tract.
The upper endoscopy identified the ulcer and allowed us to take biopsies for H. pylori.
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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