quantity

A specified or indefinite number or amount.

A considerable amount or number.

An exact amount or number.

The measurable or countable property or aspect of things.

Something that serves as the object of an operation.

The relative amount of time needed to pronounce a vowel, consonant, or syllable.

The duration of a syllable in quantitative verse.

The exact character of a proposition in reference to its universality, singularity, or particularity.