air bronchogram
C2CEFR level
95/100Rarity: very rare
TechnicalRegister
The appearance of air-filled bronchi made visible against surrounding opacified lung.
The presence of air bronchograms within the opacity favoured consolidation over a pleural effusion.
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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