volumevol·ume /ˈvɒljuːmˈvɑːljəm/ noun [countableC, uncountableU]1the amount of space that a substance or object contains or fillsThe US gallon is about five-sixths the volume of the UK gallon.
2the total amount of somethingvolume ofThe volume of exports was up 4% on the previous 4 months.
the high volume of traffic at O'Hare airport
59% of companies reported that sales volume was lower than a year ago.
The telephone company began offering a new volume discount (=price reduction for using a large amount of goods or services) for business customers.
3FINANCE the total amount of activity on a stockmarket, usually measured by the number of shares that have been traded in a particular period of timeVolume dropped sharply to 113.5 million shares.