Quantity

noun

1. A fundamental, generic term used when referring to the measurement (count, amount) of a scalar, vector, number of items or to some other way of denominating the value of a collection or group of items.

   "You have to choose between quantity and quality."

2. An indefinite amount of something.

   "Olive oil can be used practically in any quantity."

3. A specific measured amount.

   "Generally it should not be used in a quantity larger than 15 percent."

4. A considerable measure or amount.

   "The Boeing P-26A was the first all-metal monoplane fighter produced in quantity for the U.S. Army Air Corps."

5. Property of a phenomenon, body, or substance, where the property has a magnitude that can be expressed as number and a reference.