Meanings
mm1
- alternativeAlternative form of mmm.
MM2
plural MMs
- abbreviationinitialismeducationInitialism of Master of Management.
- abbreviationinitialismaeronauticsInitialism of middle marker.
- abbreviationinitialismInitialism of mile marker.
- abbreviationinitialismInitialism of man-month.
- abbreviationbusinessAbbreviation of million.
- abbreviationinitialismbusinessInitialism of market maker.
- abbreviationinitialismmathematicsInitialism of mathematical morphology.
- abbreviationinitialismnumismatic slangInitialism of mintmark.
2001 PROOF west point MM
2004 May 20, Tom, “5/20 update*TRADE ONLY* 3,000 to 4,000 coins CIRCULATED COINS to trade for CIRCULATED coins”, in rec.collecting.coins (Usenet), retrieved 04 Jan 20232 more examples
I have 5 rolls of Conn. and 2 rolls of Md Quarters, unc. and in tubes. Both states are Philadelphia and I would like to trade for Denver coins. I would like to trade both states even up, but would consider other states with a Denver MM. If you have any to trade please email me.
2001 August 24, Don, “WTT Conn. and MD Quarters”, in rec.collecting.coins (Usenet), retrieved 04 Jan 2023I know. We should include whatever pleases us. But I cringe at the thought of having to budget for a nice BU 1917 WL with the obverse MM if most type set collectors don't consider it a variety to include.
2009 September 1, Bruce Remick, “WL 50¢ 1917 obverse MM in Type Set?”, in rec.collecting.coins (Usenet), retrieved 03 Jan 2023 - abbreviationinitialismaudioInitialism of moving magnet, a type of phono cartridge.
- abbreviationinitialismoperating systemsInitialism of memory management.
- pluralplural of M (“Monsieur”)
- rail transportThe station code of Mahim Junction railway station in India.
- abbreviationinitialismvideo gamesInitialism of Majora's Mask.
mM3
- chemistrymillimole, millimoles
Synonyms & antonyms
nouna metric unit of length equal to one thousandth of a meter
Synonym sets from Open English WordNet, CC BY 4.0.
Cite this entry
mm. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/mm
“mm.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/mm. Accessed November 2, 2026.
WatkinsX Dictionary, s.v. “mm,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/mm.
Source: mm on Wiktionary, CC BY-SA 4.0.