[ uhl-tuh-moh ]
/ ˈʌl təˌmoʊ /


in or of the month preceding the current one: on the 12th ultimo. Abbreviation: ult., ulto.Compare instant(def 11), proximo.

Origin of ultimo

1575–85; < Latin ultimō (mēnse or diē) in the last (month) or on the last (day)
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British Dictionary definitions for ultimo

/ (ˈʌltɪˌməʊ) /


(esp abbreviated in formal correspondence) in or during the previous montha letter of the 7th ultimo Abbreviation: ult. Compare instant (def. 7), proximo

Word Origin for ultimo

C16: from Latin ultimō on the last
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012