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quantity

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Etymology

From [[w:Template:lang:la language|Template:lang:la]][[Category:Template:lang:la derivations]] quantitas (quantity), from quantum (how much)

Pronunciation

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Noun

Singular
quantity

Plural
quantities

quantity (quantities)
  1. A fundamental, generic term used when referring to the measurement (count, amount) of a scalar, vector, number of items or to some other way of denominating the value of a collection or group of items.
    You have to choose between quantity and quality.
  2. An indefinite amount of something
    Some soap making oils are best as base oils, used in a larger quantity in the soap, while other oils are best added in a small quantity.
    Olive oil can be used practically in any quantity.
  3. A specific measured amount
    This bag would normally costs $497.50 for a quantity of 250, at a price of $1.99 per piece.
    Generally it should not be used in a quantity larger than 15 percent.
  4. A considerable measure or amount
    The Boeing P-26A was the first all-metal monoplane fighter produced in quantity for the U.S. Army Air Corps.
  5. (mathematics) Indicates that the entire preceding expression is henceforth considered a single object.
    x plus y quantity squared equals x squared plus 2xy plus y squared.

Usage notes

  • In mathematics, used to unambiguously orate mathematical equations; it is extremely rare in print, since there is no need for it there.

Abbreviations

Quotations

  • 2006, Jerome E. Kaufmann and Karen Schwitters, Elementary and Intermediate Algebra: A Combined Approach, p 89
    For problems 58-67, translate each word phrase into an algebraic expression.
    (...)
    65. x plus 9, the quantity squared
  • 2005, R. Mark Sirkin, Statistics For The Social Sciences, p137
    The second, <math>(\sum x)^2</math>, read "summation of x, quantity squared," tells us to first add up all the xs to get <math>\sum x</math> and then square <math>\sum x</math> to get <math>(\sum x)^2</math>.
  • 1985, Serge Lang, Math!: Encounters with High School Students, p54
    ANN. <math>ra</math> quantity cubed.
    SERGE LANG. That's right, <math>(ra)^3</math>.

Related terms

Translations

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