octavo -
A sheet of paper 7 to 10 inches high and 4. 5 to 6 inches wide, the size varying with the large original sheet used to create it. Made by folding the original sheet three times to produce eight leaves.
octavo -
A book of octavo pages.
Wikipedia
Octavo (abbreviated 8vo or 8°) is a technical term describing the format of a book, which refers to the size of leaves produced from folding a full sheet of paper on which multiple pages of text were printed to form the individual sections (or gatherings) of a book. An octavo is a book or pamphlet made up of one or more full sheets of paper on which 16 pages of text were printed, which were then folded three times to produce eight leaves. Each leaf of an octavo book thus represents one eighth the size of the original sheet.
OmegaWiki Dictionary
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octavo A sheet of paper 7 to 10 inches (17-25 cm) high and 4.5 to 6 inches (11-15 cm) wide, the size varying with the large original sheet used to create it, made by folding the original sheet three times to produce eight leaves.
