Quantity vs Countable - What's the difference?

quantity | countable |


As a noun quantity

is 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.

As a adjective countable is

capable of being counted; having a quantity or a numerical attribute.

quantity

Noun

(quantities)
  • 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.
  • 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 .
  • 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.
  • 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.
  • (metrology) Property of a phenomenon, body, or substance, where the property has a magnitude that can be expressed as number and a reference.
  • (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 .
  • * 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, (\sum x)^2, read "summation of x, quantity squared," tells us to first add up all the xs to get \sum x and then square \sum x to get (\sum x)^2.
  • * 1985 , Serge Lang, Math!: Encounters with High School Students , p54
  • ANN. ra quantity cubed.
    SERGE LANG. That's right, (ra)^3.

    Usage notes

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

    Synonyms

    * Qty

    See also

    * measure * unit

    countable

    English

    Adjective

    (-)
  • Capable of being counted; having a quantity.
  • (mathematics, of a set) Countably infinite; having a bijection with the natural numbers.
  • (mathematics, of a set) Countably infinite or finite; having a bijection with a subset of the natural numbers.
  • (grammar, of a noun) Freely usable with the indefinite article and with numbers, and therefore having a plural form.
  • Synonyms

    * (having a bijection with a subset of the natural numbers) denumerable

    Antonyms

    * uncountable

    Hyponyms

    * (having a bijection with a subset of the natural numbers) finite, countably infinite

    Hypernyms

    * (countably infinite) infinite

    Derived terms

    * countable set * countable additivity

    See also

    * mass noun * plurale tantum