margin
B1CEFR level
25/100Rarity: fairly common
TechnicalRegister
Medicine noun
The rim of apparently normal tissue removed around a tumour, assessed for residual cancer.
A positive resection margin indicates that tumour reaches the edge of the specimen and raises recurrence risk.
Business noun
The percentage of revenue that remains as profit after costs are subtracted.
Cheaper materials pushed our gross margin up by four percentage points.
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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