M-day

noun

ˈem-ˌdā How to pronounce M-day (audio)
: a day on which a military mobilization is to begin

Word History

Etymology

mobilization day

First Known Use

1924, in the meaning defined above

Time Traveler
The first known use of M-day was in 1924

Dictionary Entries Near M-day

MD

M-day

MDC

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Cite this Entry

“M-day.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/M-day. Accessed 19 Apr. 2024.

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