quantity

n. amount, extent; measure, degree; large amount; size, magnitude (Mathematics)

Quantity is a kind of property which exists as magnitude or multitude. It is among the basic classes of things along with quality, substance, change, and relation. Quantity was first introduced as quantum, an entity having quantity. Being a fundamental term, quantity is used to refer to any type of quantitative properties or attributes of things. Some quantities are such by their inner nature (as number), while others are functioning as states (properties, dimensions, attributes) of things such as heavy and light, long and short, broad and narrow, small and great, or much and little. A small quantity is sometimes referred to as a quantulum.
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(v. t.)
To modify or qualify with respect to quantity; to fix or express the quantity of; to rate.
  

(n.)
The relative duration of a tone.
  

(n.)
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.
  

(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 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.)
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; as, a medicine taken in quantities, that is, in large quantities.
  

Noun
1. how much there is of something that you can quantify
(synonym) measure, amount
(hypernym) abstraction
(hyponym) probability, chance
(attribute) standard
2. an adequate or large amount; "he had a quantity of ammunition"
(hypernym) amount
(hyponym) abundance, copiousness, teemingness
(attribute) abundant
3. something that has a magnitude and can be represented in mathematical expressions by a constant or a variable
(hypernym) concept, conception, construct
(hyponym) quantum
(derivation) quantify, measure