noun quan·ti·ty \ ˈkwän-tə-tē \
Updated on: 2 Feb 2018

Definition of quantity

plural quantities
1 a : an indefinite amount or number
b : a determinate or estimated amount
c : total amount or number
d : a considerable amount or number often used in plural
  • generous quantities of luck
  • —H. E. Putsch
2 a : the aspect in which a thing is measurable in terms of greater, less, or equal or of increasing or decreasing magnitude
b : the subject of a mathematical operation
c : an individual considered with respect to a given situation
  • an unknown quantity … as attorney general
  • —Tom Wicker
3 a : duration and intensity of speech sounds as distinct from their individual quality or phonemic character; specifically : the relative length or brevity of a prosodic syllable in some languages (such as Greek and Latin)
b : the relative duration or time length of a speech sound or sound sequence
4 : the character of a logical proposition as being universal, particular, or singular

Examples of quantity in a Sentence

  1. The wine is made in small quantities.

  2. The boss is worried about quantity as well as quality.

  3. The family buys food in quantity.

Recent Examples of quantity from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'quantity.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of quantity

Middle English quantite, from Anglo-French quantité, from Latin quantitat-, quantitas, from quantus how much, how large; akin to Latin quam how, as, quando when, qui who — more at who

Other Mathematics and Statistics Terms

QUANTITY Defined for English Language Learners



Definition of quantity for English Language Learners

  • : an amount or number of something

  • : a large amount or number of something

QUANTITY Defined for Kids


noun quan·ti·ty \ ˈkwän-tə-tē \

Definition of quantity for Students

plural quantities
1 : 2amount, number
  • There's a small quantity of fuel left.
2 : a large number or amount
  • quantities of money
  • We buy food in quantity.

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