oc|ta|vo

oc|ta|vo «ok TAY voh, -TAH-», noun, plural -vos, adjective.

–n.

1. the page size of a book in which each leaf is one eighth of a whole sheet of paper.

2. a book having pages of this size, usually about 6 by 9 inches. Abbr: 8vo, 8⁰.

–adj.

having this size.

╂[< Medieval Latin in octavo in an eighth]