octodecimo definition

  • noun:
    • The page dimensions, 4 by 6 1/2 inches, of a book consists of printer's sheets folded into 18 leaves or 36 pages.
    • A book consists of octodecimo pages.
    • A size of a sheet of report resulting from folding and cutting a sheet of paper into eighteenths (3.5"-4.5" x 4.9"-5.9").
    • a novel composed of pages of the dimensions.
    • a novel made up of sheets each of which can be collapsed into eighteen leaves; therefore; indicating more or less absolutely a size of guide, whoever sheets are creased; -- typically written 18mo or 18°, and called eighteenmo.
    • just like eighteenmo. Abbreviated 18mo.
  • adjective:
    • Having eighteen leaves to a sheet

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