volume

(noun) the amount of 3-dimensional space occupied by an object. Examples: "The gas expanded to twice its original volume."

(noun) the property of something that is great in magnitude. Synonyms: bulk, mass. Examples: "It is cheaper to buy it in bulk." "He received a mass of correspondence." "The volume of exports."

(noun) physical objects consisting of a number of pages bound together. Synonyms: book. Examples: "He used a large book as a doorstop."

(noun) a publication that is one of a set of several similar publications. Examples: "The third volume was missing." "He asked for the 1989 volume of the annual review."

(noun) a relative amount. Examples: "Mix one volume of the solution with ten volumes of water."

(noun) the magnitude of sound (usually in a specified direction). Synonyms: loudness, intensity. Examples: "The kids played their music at full volume."