Quantity (noun)

1. An amount of something, especially a measurable amount.
2. A measure of the magnitude of a quantity, especially a physical one, such as size or amount.

Origin:

From latin quantitas, from quantus 'how much'.

Examples:

1. The quantity of water in the bucket was measured accurately.
2. We need to order a larger quantity of supplies.
3. The quantity of food being served was enough to feed the entire group.
4. The quantity of the product being sold was limited to 20 per person.
5. The quantity of wine being imported has increased significantly.