How to Use index number in a Sentence

index number

noun
  • Pollutants build as the air doesn’t move and the air-quality index numbers rise.
    — David Staats, Idaho Statesman, 16 Feb. 2026
  • The index numbers are based on the close of trading in New York Wednesday.
    — Brendan Coffey, Bloomberg.com, 12 Oct. 2017
  • The index number itself was down a 20th of a percentage point from July.
    — Edward Lotterman, Twin Cities, 14 Sep. 2025
  • These sequences are assigned the same barcode index number, or BIN.
    — Brooke Jarvis, WIRED, 10 Nov. 2022
  • Its index number is down, but not enough for anyone else from Washington to New England to beat it.
    — Eric Griffith, PCMAG, 17 June 2022
  • Mississippi places most poorly in this system, with an index number of 100 based on a high percentage of uninsured drivers and high fatality rate.
    — Kaitlyn Bancroft, The Salt Lake Tribune, 14 Apr. 2022
  • On the other hand, South Carolina’s Comporium almost doubled its index number and dropped to 10th place.
    — PCMAG, 19 Dec. 2022
  • April’s affordability index number represents an 18% increase from last year’s, according to the company.
    — Colin Lodewick, Fortune, 7 June 2022
  • The overall index number was bad, but even more worrisome is the report's drop in factory orders of exports, said Torsten Slok, chief economist at Deutsche Bank.
    — Anneken Tappe, CNN, 1 Oct. 2019
  • Investors were awaiting Chinese manufacturing and nonmanufacturing purchasing managers index numbers, due out Wednesday, for clues on the health of the world’s second-largest economy.
    — David Hodari, WSJ, 30 Oct. 2018

Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'index number.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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