/vol"yoohm, -yeuhm/ , n.
1. a collection of written or printed sheets bound together and constituting a book.
2. one book of a related set or series.
3. a set of issues of a periodical, often covering one year.
4. Hist. a roll of papyrus, parchment, or the like, or of manuscript.
5. the amount of space, measured in cubic units, that an object or substance occupies.
6. a mass or quantity, esp. a large quantity, of something: a volume of mail.
7. amount; total: the volume of sales.
8. the degree of sound intensity or audibility; loudness: to turn up the volume on a radio.
9. fullness or quantity of tone.
10. speak volumes ,
a. to be very evident or significant: Her testimony spoke volumes.
b. to be expressive or meaningful: Your eyes speak volumes.
[ 1350-1400; ME volum ( e ) volumen roll (of sheets), equiv. to volu-, base of volvere to roll + -men n. suffix ]
Syn. 5. See size 1 .