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noun

index

CEFR B2

a numerical scale used to compare variables with one another or with some reference number

In a sentence

Six example sentences with index, each labelled with its topic.

  • The cost-of-living index sits at 118 this year, meaning the same basket costs eighteen percent more than in the base year.

    Economics

  • The air quality index climbed past 150 for four days, and the schools moved every lesson indoors.

    Environment

  • A single pain index from zero to ten lets two nurses on different shifts compare what the patient reported.

    Medicine

  • The stock index closed at 4,200, up two percent, and every pension fund tracking it rose by the same amount.

    Finance

  • A body mass index above thirty is the usual cutoff in these studies, though it says nothing about muscle.

    Fitness

  • The league's efficiency index folds points, rebounds, and turnovers into one number so fans can compare a center with a guard.

    Basketball

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Found in these word lists

Found in 8 published word lists

Each source is a published word list that contains index. No exam board publishes an official GRE, GMAT or SAT list; GMAT words come from GRE lists and the Academic Word List.