quantity >> /ˈkwɑn(t)ədi/
Definition: [noun] The amount or number of a material or immaterial thing not usually estimated by spatial measurement.
Example: the quantity and quality of the fruit can be controlled
Definition: [noun] The perceived length of a vowel sound or syllable.
Example: In speech, this feature is reflected in phonological quantity.
Definition: [noun] A value or component that may be expressed in numbers.
Example: Another important quantity is the clustering coefficient C of a vertex.