Definitions for: Octavo

[n] the size of a book whose pages are made by folding a sheet of paper three times to form eight leaves

Webster (1913) Definition: Oc*ta"vo, n.;pl. Octavos. [L. in octavo; in in +
octavo, abl. of octavus. See Octave.]
A book composed of sheets each of which is folded into eight
leaves; hence, indicating more or less definitely a size of
book so made; -- usually written 8vo or 8[deg].

Oc*ta"vo, a.
Having eight leaves to a sheet; as, an octavo form, book,
leaf, size, etc.

Synonyms: 8vo, eightvo

See Also: size

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