What is the meaning of volume?

noun

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