Meanings
- historicalA section of British military intelligence in World War II; they were charged with aiding resistance fighters in enemy territory and recovering Allied troops from behind enemy lines.
Origin
Abbreviation of Military Intelligence, Section 9.
Full word history & related roots →Cite this entry
MI9. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/MI9
“MI9.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/MI9. Accessed November 2, 2026.
WatkinsX Dictionary, s.v. “MI9,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/MI9.
Source: MI9 on Wiktionary, CC BY-SA 4.0.