Definitions for: Quantity


[n] how much there is of something that you can measure
[n] an adequate or large amount; "he had a quantity of ammunition"
[n] something that has a magnitude and can be represented in mathematical expressions by a constant or a variable



Webster (1913) Definition: Quan"ti*ty, v. t. [L. quantus now much + -fy.]
To modify or qualify with respect to quantity; to fix or
express the quantity of; to rate.


Quan"ti*ty, n.; pl. Quantities. [F. quantite, L.
quantitas, fr. quantus bow great, how much, akin to quam bow,
E. how, who. See Who.]
1. 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. Hence, in specific uses:
(a) (Logic) 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.
(b) (Gram.) The measure of a syllable; that which
determines the time in which it is pronounced; as, the
long or short quantity of a vowel or syllable.
(c) (Mus.) The relative duration of a tone.

2. That which can be increased, diminished, or measured;
especially (Math.), anything to which mathematical
processes are applicable.

Note: Quantity is discrete when it is applied to separate
objects, as in number; continuous, when the parts are
connected, either in succession, as in time, motion,
etc., or in extension, as by the dimensions of space,
viz., length, breadth, and thickness.

3. A determinate or estimated amount; a sum or bulk; a
certain portion or part; sometimes, a considerable amount;
a large portion, bulk, or sum; as, a medicine taken in
quantities, that is, in large quantities.

The quantity of extensive and curious information
which he had picked up during many months of
desultory, but not unprofitable, study. --Macaulay.

Quantity of estate (Law), its time of continuance, or
degree of interest, as in fee, for life, or for years.
--Wharton (Law Dict. )

Quantity of matter, in a body, its mass, as determined by
its weight, or by its momentum under a given velocity.

Quantity of motion (Mech.), in a body, the relative amount
of its motion, as measured by its momentum, varying as the
product of mass and velocity.

Known quantities (Math.), quantities whose values are
given.

Unknown quantities (Math.), quantities whose values are
sought.

Synonyms: amount, measure, quantum

See Also: abstraction, abundance, amount, amount, binomial, chance, concept, conception, constant, constant quantity, construct, copiousness, cordage, definite quantity, economic value, fundamental measure, fundamental quantity, indefinite quantity, interval, linear measure, long measure, magnetisation, magnetization, mathematical product, numerical quantity, octane number, octane rating, operand, parameter, period of play, play, playing period, probability, product, proof, proportional, quantum, relative quantity, sum, system of measurement, teemingness, term, time interval, time unit, total, unit of time, value, variable, variable quantity, volume




Famous Quotes Containing Quantity:


If the quantity of labour realized in commodities, regulate their exchangeable value, every increase of the quantity of labour must augment the value of that commodity on which it is exercised, as every diminution must lower it.

-- David Ricardo (British Economist)

Badness you can get easily, in quantity; the road is smooth, and it lies close by, But in front of excellence the immortal gods have put sweat, and long and steep is the way to it.

-- Hesiod (Greek Poet)

Nothing of the kind; they do all these things in their houses and sheds, with common charcoal fires, and a quantity of straw to stop up the crevices in the doors and windows.

-- Robert Fortune (Scottish Scientist)

If a commodity were in no way useful, - in other words, if it could in no way contribute to our gratification, - it would be destitute of exchangeable value, however scarce it might be, or whatever quantity of labour might be necessary to procure it.

-- David Ricardo (British Economist)

If I cannot overwhelm with my quality, I will overwhelm with my quantity.

-- Emile Zola (French Novelist)

It is not by the absolute quantity of produce obtained by either class, that we can correctly judge of the rate of profit, rent, and wages, but by the quantity of labour required to obtain that produce.

-- David Ricardo (British Economist)

It is the quality rather than the quantity that matters.

-- Lucius Annaeus Seneca (Roman Statesman)

Knowledge comes, but wisdom lingers. It may not be difficult to store up in the mind a vast quantity of face within a comparatively short time, but the ability to form judgments requires the severe discipline of hard work and the tempering heat of experience and maturity.

-- Calvin Coolidge (American President)

In bodies moved, the motion is received, increased, diminished, or lost, according to the relations of the quantity of matter and velocity; each diversity is uniformity, each change is constancy.

-- Charles de Secondat (French Philosopher)

Everyone who comes out does a very foolish thing in bringing such a quantity of clothes that he never wants.

-- William John Wills (English Scientist)

Gold, on the contrary, though of little use compared with air or water, will exchange for a great quantity of other goods.

-- David Ricardo (British Economist)

It will be readily admitted, that a degree conferred by an university, ought to be a pledge to the public that he who holds it possesses a certain quantity of knowledge.

-- Charles Babbage (English Mathematician)

The greatest felony in the news business today is to be behind, or to miss a big story. So speed and quantity substitute for thoroughness and quality, for accuracy and context.

-- Carl Bernstein (American Journalist)

But in truth, should I meet with gold or spices in great quantity, I shall remain till I collect as much as possible, and for this purpose I am proceeding solely in quest of them.

-- Christopher Columbus (Italian Explorer)

We are rich in the quantity of songs rather than in the quality. The singer has to go through hundreds of compositions before he finds one that really says something.

-- Alma Gluck (American Musician)

I am not one of the great composers. All the great have produced enormously. There is everything in their work - the best and the worst, but there is always quantity. But I have written relatively little.

-- Maurice Ravel (French Composer)

Each year, therefore, a dollar spent on alcoholic beverages has purchased a smaller quantity.

-- William Lyon Mackenzie King (Canadian Politician)

Knowledge is like money: to be of value it must circulate, and in circulating it can increase in quantity and, hopefully, in value.

-- Louis L'Amour (American Author)

Simplicity is the final achievement. After one has played a vast quantity of notes and more notes, it is simplicity that emerges as the crowning reward of art.

-- Frederic Chopin (Polish Composer)

To those who ask what the infinitely small quantity in mathematics is, we answer that it is actually zero. Hence there are not so many mysteries hidden in this concept as they are usually believed to be.

-- Leonhard Euler (Swiss Mathematician)

It's difficult to get started-when it comes to dealing with an unknown quantity, people are reluctant to trust their own opinion. It helps if two or three people give you a boost.

-- Lyle Lovett (American Musician)

The trouble with the public is that there is too much of it; what we need in public is less quantity and more quality.

-- Don Marquis (American Poet)

Education alone can conduct us to that enjoyment which is, at once, best in quality and infinite in quantity.

-- Horace Mann (American Educator)

What makes a specific quality or quantity of innovation retain its intense newness over the years?

-- Brian Ferneyhough (British Composer)

We can make a commitment to promote vegetables and fruits and whole grains on every part of every menu. We can make portion sizes smaller and emphasize quality over quantity. And we can help create a culture - imagine this - where our kids ask for healthy options instead of resisting them.

-- Michelle Obama (American First Lady)

The older view of the nature of heat was that it is a substance, very fine and imponderable indeed, but indestructible, and unchangeable in quantity, which is an essential fundamental property of all matter.

-- Hermann von Helmholtz (German Physicist)

The first requisite of a sound monetary system is that it put the least possible power over the quantity or quality of money in the hands of the politicians.

-- Henry Hazlitt (American Philosopher)

What appeared to the earlier physicists to be the constant quantity of heat is nothing more than the whole motive power of the motion of heat, which remains constant so long as it is not transformed into other forms of work, or results afresh from them.

-- Hermann von Helmholtz (German Physicist)

The numbers may be said to rule the whole world of quantity, and the four rules of arithmetic may be regarded as the complete equipment of the mathematician.

-- James C. Maxwell (Scottish Mathematician)

Everyone is looking for the sure thing. They are looking to hedge their bet. They think the way to do that is to go with a proven quantity, a remake of something you have already seen. That is their mindset.

-- Leonard Maltin (American Critic)

As the revenue of the farmer is realized in raw produce, or in the value of raw produce, he is interested, as well as the landlord, in its high exchangeable value, but a low price of produce may be compensated to him by a great additional quantity.

-- David Ricardo (British Economist)

Greatness, generally speaking, is an unusual quantity of a usual quality grafted upon a common man.

-- William Allen White (American Editor)

Number is different from quantity.

-- Gregory Bateson (British Scientist)

Gold and silver, like other commodities, have an intrinsic value, which is not arbitrary, but is dependent on their scarcity, the quantity of labour bestowed in procuring them, and the value of the capital employed in the mines which produce them.

-- David Ricardo (British Economist)

If one introduces the concept of energy of an earthquake then that is a theoretically derived quantity.

-- Charles Francis Richter (American Scientist)


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