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Answer:

We have spotted OCTAVO (6 Letters) a total of 2 times in our database. Below you may see the clues associated with OCTAVO and also when and where was it last seen:

Definition

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¡.
Having eight leaves to a sheet; as, an octavo form, book, leaf, size, etc.

Referring crossword puzzle clues

Usage among publishers: