proration
C2CEFR level
85/100Rarity: very rare
TechnicalRegister
The proportional allocation of an amount across periods, parties, or units.
The proration of the annual bonus reflected the number of months each employee had worked.
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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