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

  • n. A specified or indefinite number or amount.
  • n. A considerable amount or number: sells drugs wholesale and in quantity.
  • n. An exact amount or number.
  • n. The measurable, countable, or comparable property or aspect of a thing.
  • n. Mathematics Something that serves as the object of an operation.
  • n. Linguistics The relative amount of time needed to pronounce a vowel, consonant, or syllable.
  • n. The duration of a syllable in quantitative verse.
  • n. Logic The exact character of a proposition in reference to its universality, singularity, or particularity.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. 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.
  • n. An indefinite amount of something.
  • n. A specific measured amount.
  • n. A considerable measure or amount.
  • n. Property of a phenomenon, body, or substance, where the property has a magnitude that can be expressed as number and a reference.
  • n. Indicates that the entire preceding expression is henceforth considered a single object.

from the GNU version of the Collaborative International Dictionary of English

  • n. The attribute of being so much, and not more or less; the property of being measurable, or capable of increase and decrease, multiplication and division; greatness; and more concretely, that which answers the question “How much?”; measure in regard to bulk or amount; determinate or comparative dimensions; measure; amount; bulk; extent; size.
  • n. The extent or extension of a general conception, that is, the number of species or individuals to which it may be applied; also, its content or comprehension, that is, the number of its constituent qualities, attributes, or relations.
  • n. The measure of a syllable; that which determines the time in which it is pronounced.
  • n. The relative duration of a tone.
  • n. That which can be increased, diminished, or measured; especially (Math.), anything to which mathematical processes are applicable.
  • n. A determinate or estimated amount; a sum or bulk; a certain portion or part; sometimes, a considerable amount; a large portion, bulk, or sum.

from The Century Dictionary and Cyclopedia

  • n. The being so much in measure or extent; technically, the intrinsic mode by virtue of which a thing is more or less than another; a system of relationship by virtue of which one thing is said to be more or less than another; magnitude.
  • n. In the concrete, an object regarded as more or less; a quantum; any amount, magnitude, or aggregate, in a concrete sense: as, a quantity of water: sometimes erroneously used to denote that which should be enumerated rather than measured: as, a quantity of people.
  • n. A large or considerable amount.
  • n. A piece or part, especially a small portion; anything very little or diminutive.
  • n. Proportion; correspondent degree.
  • n. In anc. orthoëpy, pros., and metrics, the relative time occupied in uttering a vowel or a syllable; that characteristic of a vowel or a syllable by which it is distinguished as long or short; syllabic measure or time; prosodic length.
  • n. In logic, that respect in which universal and particular propositions differ. See proposition, and logical quantity, below.
  • n. In electricity, the amount of electricity which passes through any section of a circuit in a unit of time: more exactly termed the strength of the current.
  • n. Quantity of comprehension or intension, or logical depth, a relative character of a term such that when it is in excess the term has all the predicates of another term, and more besides; or a relative character of a proposition such that when it is in excess the proposition is followed by all the consequents of another proposition, and more besides.
  • n. Quantity of science (Aquinas) or of information, a relative character of a concept such that when it is in excess it has all the subjects and predicates of another concept, and more besides, owing to its being in a mind which has more knowledge. Logical quantity is to be distinguished from the quantity of a proposition.
  • n. Specifically, same as duration or time-value: said of musical tones or notes.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. an adequate or large amount
  • n. the concept that something has a magnitude and can be represented in mathematical expressions by a constant or a variable
  • n. how much there is or how many there are of something that you can quantify


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

Middle English quantite, from Old French, from Latin quantitās, quantitāt-, from quantus, how great; see kwo- in Indo-European roots.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin quantitas ("quantity"), from quantus ("how much").


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