Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Mathematics A subscript.
  • n. An index of measurement based on relatively few variables, especially a trade index based on the performance of a particular group or type of stocks.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A subsidiary index, or one that represents a sector of a larger one
  • n. A subscript

from the GNU version of the Collaborative International Dictionary of English

  • n. A number or mark placed opposite the lower part of a letter or symbol to distinguish the symbol.

from The Century Dictionary and Cyclopedia

  • n. A specifying figure or letter following and slightly below a figure, letter, or symbol: as the 0 in x0.

Etymologies

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Examples

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