octodecimo

== English == === Etymology === From Latin ablative of octusdecimus (“eighteenth”). === Noun === octodecimo (plural octodecimos) (paper, printing) A size of a sheet of paper resulting from folding and cutting a sheet of paper into eighteenths (3.5"–4.5" x 4.9"–5.9"). (printing) A book consisting of pages of that size. ==== Synonyms ==== (paper size): 18mo, eighteenmo, 18º (book size): 18mo, eighteenmo, 18º, T ==== See also ====