What is the meaning of Eighteenmo?

(a.&n.) See Octodecimo.
Webster's Revised Unabridged Dictionary
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APAWebster's. (2011). eighteenmo. Retrieved September 21, 2026, from http://smartdefine.org/eighteenmo/definitions/2001909
ChicagoWebster's. 2011. "eighteenmo" http://smartdefine.org/eighteenmo/definitions/2001909 (accessed September 21, 2026).
HarvardWebster's 2011, eighteenmo, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/eighteenmo/definitions/2001909>.
MLAWebster's. "eighteenmo" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/eighteenmo/definitions/2001909>