Quantity

[kwon-ti-tee] /ˈkwɒn tɪ ti/

noun, plural quantities.
1.
a particular or indefinite amount of anything:
a small quantity of milk; the ocean’s vast quantity of fish.
2.
an exact or specified amount or measure:
Mix the ingredients in the quantities called for.
3.
a considerable or great amount:
to extract ore in quantity.
4.
Mathematics.

5.
Music. the length or duration of a note.
6.
Logic. the character of a proposition as singular, universal, particular, or mixed, according to the presence or absence of certain kinds of quantifiers.
7.
that amount, degree, etc., in terms of which another is greater or lesser.
8.
Prosody, Phonetics. the relative duration or length of a sound or a syllable, with respect to the time spent in pronouncing it; length.
9.
Law. the nature of an estate as affected by its duration in time.
/ˈkwɒntɪtɪ/
noun (pl) -ties
1.

2.
the aspect or property of anything that can be measured, weighed, counted, etc
3.
a large or considerable amount
4.
(maths) an entity having a magnitude that may be denoted by a numerical expression
5.
(physics) a specified magnitude or amount; the product of a number and a unit
6.
(logic) the characteristic of a proposition dependent on whether it is a universal or particular statement, considering all or only part of a class
7.
(prosody) the relative duration of a syllable or the vowel in it
n.

early 14c., from Old French quantite, cantite (12c., Modern French quantité) and directly from Latin quantitatem (nominative quantitas) “relative greatness or extent,” coined as a loan-translation of Greek posotes (from posos “how great? how much?”) from Latin quantus “of what size? how much? how great? what amount?,” correlative pronomial adjective, related to qui “who” (see who).

Latin quantitatem also is the source of Italian quantita, Spanish cantidad, Danish and Swedish kvantitet, German quantitat.
quantity
(kwŏn’tĭ-tē)
Something, such as a number or symbol that represents a number, on which a mathematical operation is performed.
see: unknown quantity