duodecimo

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duodecimo

Where it comes from

Latin ablative of duodecimus (“twelfth”) (from duodecim 'twelve', from duo 'two' + decem 'ten')

noun duodecimos

A size of paper, so called because it is originally made by folding and cutting a single sheet from a printing press into 12 leaves; (5 by 7¾ inches): 6.5 to 7.5 inches high, approximately 4.5 inches wide.
Similar: twelvemo, 12mo, 12º
A sheet or page of that size.
A book having pages of that size. In recent years, I have taken to reading while walking. I believe the Romantics were guilty of such behavior; a duodecimo was small enough to fit into a jacket pocket.
Similar: twelvemo, 12mo, 12º, D

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noun to be checked

Français	in-duodecimo, in-douze, in-12º

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MLA

"duodecimo." Wiktionary, via Micwyn, micwyn.com/word/duodecimo. Accessed 6 Nov. 2026.

APA

duodecimo. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/duodecimo

Chicago

"duodecimo." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/duodecimo.

BibTeX

@misc{duodecimo_2026,
  title = {duodecimo},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/duodecimo},
  urldate = {2026-11-06}
}