choana
C2CEFR level
97/100Rarity: very rare
TechnicalRegister
One of the paired posterior apertures through which the nasal cavity communicates with the nasopharynx.
A large nasal polyp had prolapsed backwards through the choana into the nasopharynx.
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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