onychocryptosis
C2CEFR level
98/100Rarity: very rare
TechnicalRegister
The condition in which a nail edge grows into the surrounding skin, commonly called an ingrown toenail.
The inflamed nail sulcus and offensive discharge pointed to an infected onychocryptosis.
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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