ultimo

adjective

ul·ti·mo ˈəl-tə-ˌmō

: of or occurring in the month preceding the present

… on the afternoon of Thursday, the 17th ultimo, wind, rain, and snow filled the whole basin …—

John Muir

Word History

Etymology

Latin ultimo mense in the last month

First Known Use

1616, in the meaning defined above

Time Traveler

The first known use of ultimo was in 1616

See more words from the same year

Cite this Entry

Style

“Ultimo.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultimo. Accessed 8 Nov. 2025.

Copy Citation

Last Updated: 4 Nov 2025 - Definition revised

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