Definify.com
Webster 1913 Edition
Octodecimo
Ocˊto-dec′i-mo
,Noun.
pl.
Octodecimos
. A book composed of sheets each of which is folded into eighteen leaves; hence; indicating more or less definitely a size of book, whose sheets are so folded; – usually written 18mo or 18°, and called
eighteenmo
. Definition 2024
octodecimo
octodecimo
English
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
| Latin | folio | quarto | sexto | octavo | duodecimo | sextodecimo | octodecimo | vicesimo-quarto | trigesimo-secundo | quadragesimo-octavo | sexagesimo-quarto |
| ALA | F | Q | O | D | S | T | Tt | Fe | Sf | ||
| ht. (cm) | > 30 | 25-30 | 25-30 | 20-25 | 17.5-20 | 15-17.5 | 12.5-15 | 12.5-15 | 10-12.5 | 7.5-10 | < 7.5 |
| printers' | folio | quarto | sixmo | octavo | twelvemo | sixteenmo | eighteenmo | twenty-fourmo | thirty-twomo | forty-eightmo | sixty-fourmo |
| abbrev. | fo or f | 4to | 6to or 6mo | 8vo | 12mo | 16mo | 18mo | 24mo | 32mo | 48mo | 64mo |
| abbrev. | 2º | 4º | 6º | 8º | 12º | 16º | 18º | 24º | 32º | 48º | 64º |
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