noun pl. quantities -·ties

1. an amount; portion
2. any indeterminate bulk, weight, or number
3. the exact amount of a particular thing
4. a great amount or number to buy a commodity in quantity
5. that property of anything which can be determined by measurement
6. Logic that characteristic of a proposition according to which it is classified as universal or particular
7. Math.
   1. a thing that has the property of being measurable in dimensions, amounts, etc. or in extensions of these which can be expressed in numbers or symbols
   2. a number or symbol expressing a mathematical quantity
8. Phonet., Prosody the relative length, or duration, of a vowel, continuant consonant, or syllable

Etymology: ME quantite < OFr < L quantitas < quantus, how great < quam, how, how much < IE interrogative base *kwo- > who, what