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Etymology edit

From Latin undecim (eleven); formed as logical continuation to December, which in its turn is derived from Latin decem (ten), as it was the tenth month in the Roman calendar. It is unclear whether the term was ever used in Classic Latin as a name for an intercalary month.

Proper noun edit

Undecimber

  1. A fictitious thirteenth month of the Western calendar.

Quotations edit

See also edit

Anagrams edit