Meaning of VOLUME in English
( n. )
Hence, a collection of printed sheets bound together, whether containing a single work, or a part of a work, or more than one work; a book; a tome; especially, that part of an extended work which is bound up together in one cover; as, a work in four volumes.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012