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:


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)

In the same manner if any nation wasted part of its wealth, or lost part of its trade, it could not retain the same quantity of circulating medium which it before possessed.

-- David Ricardo (British Economist)

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)

Corn is the leading food and feed crop of the United States in geographic range of production, acreage, and quantity of product. The vital importance of a large acreage of this crop, properly cared for, therefore, is obvious.

-- David F. Houston (American Politician)

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)

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)

Though I have no productive worth, I have a certain value as an indestructible quantity.

-- Alice James (American Writer)

The belief is growing on me that the disease is communicated by the bite of the mosquito... She always injects a small quantity of fluid with her bite - what if the parasites get into the system in this manner.

-- Ronald Ross (Scottish Scientist)

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)

It is not the quantity but the quality of knowledge which determines the mind's dignity.

-- William Ellery Channing (American Writer)

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)

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

-- Charles Francis Richter (American Scientist)

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)

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)

It is quality rather than quantity that matters.

-- Lucius Annaeus Seneca (Roman Statesman)

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)

There were sometimes from forty to sixty English machines, but unfortunately the Germans were often in the minority. With them quality was more important than quantity.

-- Manfred von Richthofen (German Aviator)

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)

In the twelve months immediately preceding the outbreak; of war, the quantity of spirits, both domestic and imported released for sale in Canada, amounted to over three and a half million proof gallons.

-- William Lyon Mackenzie King (Canadian Politician)

Quantity in food is more to be regarded than quality. A full meal is a great enemy both to study and industry.

-- Samuel Richardson (English Novelist)

To say that most of us today are purely expansive is only another way of saying that most of us continue to be more concerned with the quantity than with the quality of our democracy.

-- Irving Babbitt (American Critic)

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

-- William Allen White (American Editor)

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)

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)

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

-- Horace Mann (American Educator)

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

-- William Lyon Mackenzie King (Canadian Politician)

Wales was in ancient times divided into three parts nearly equal, consideration having been paid, in this division, more to the value than to the just quantity or proportion of territory.

-- Giraldus Cambrensis (Welsh Clergyman)

All things will be produced in superior quantity and quality, and with greater ease, when each man works at a single occupation, in accordance with his natural gifts, and at the right moment, without meddling with anything else.

-- Plato (Greek Philosopher)

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)

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)

Beauty is composed of an eternal, invariable element whose quantity is extremely difficult to determine, and a relative element which might be, either by turns or all at once, period, fashion, moral, passion.

-- Jean-Luc Godard (French Director)

The first truth for special operations is that quality is more important than quantity.

-- Hugh Shelton (American Soldier)

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)

It is the quality rather than the quantity that matters.

-- Lucius Annaeus Seneca (Roman Statesman)

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)


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