Noun
1. the amount of 3-dimensional space occupied by an object;
"the gas expanded to twice its original volume"2. the property of something that is great in magnitude;
"it is cheaper to buy it in bulk""he received a mass of correspondence""the volume of exports"3. physical objects consisting of a number of pages bound together;
"he used a large book as a doorstop"4. a publication that is one of a set of several similar publications;
"the third volume was missing""he asked for the 1989 volume of the Annual Review"5. a relative amount;
"mix one volume of the solution with ten volumes of water"6. the magnitude of sound (usually in a specified direction);
"the kids played their music at full volume"