scale
A1CEFR level
15/100Rarity: common
TechnicalRegister
Medicine noun
A visible flake of stratum corneum arising from abnormal keratinisation and shedding of the outer epidermis.
The plaques were covered by loosely adherent silvery scale that bled on removal.
Business verb
To grow a business rapidly while keeping unit costs under control.
The model worked in one city, but nobody knew whether it would scale nationally.
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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