eighteenmo

E1I1G2H4T1E1E1N1M3O1

noun

octodecimo (as a paper size in printing).

OriginEnglish eighteen ← Middle English eightetene ← Anglian Old English eahtatēne →
Scrabble 16
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Meanings

nouneighteenmo (plural eighteenmos)

plural eighteenmos

  1. octodecimo (as a paper size in printing).

Synonyms & antonyms

Also see
18mooctodecimo

Origin

  1. Proto-Indo-European*oḱtṓw
  2. Proto-Germanic*ahtōu
  3. Proto-Indo-European*déḱm̥
  4. Proto-Germanic*tehun
  5. Proto-Germanic*ahtōutehun
  6. Anglian Old Englisheahtatēne
  7. Middle Englisheightetene
  8. Englisheighteen
  9. Englisheighteenmo

From eighteen + -mo.

Full word history & related roots →
Cite this entry
APA

eighteenmo. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/eighteenmo

MLA

“eighteenmo.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/eighteenmo. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “eighteenmo,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/eighteenmo.

Source: eighteenmo on Wiktionary, CC BY-SA 4.0.