GM

GM

1. (international standards) ISO 3166-1 alpha-2 country code for Gambia.

   Synonym: GMB (alpha-3)

GM (countable and uncountable, plural GMs)

1. (countable, roleplaying games) Initialism of game master or game moderator.

   Synonyms: dungeon master, DM, storyteller, ST

2. (countable) Initialism of general manager.
3. (usually uncountable) Initialism of genital mutilation.
4. (usually uncountable) Initialism of genetic modification.
5. (countable, also attributively) Initialism of gender minority.
   • 2018, Peter M. Monti, Suzanne M. Colby, Tracy O'Leary Tevyaw, Brief Interventions for Adolescent Alcohol and Substance Abuse, Guilford Publications, →ISBN, page 306:

     Indeed, because of the paucity of literature on GM youth and the important distinctions between GM and SM youth, ...

6. (countable) Initialism of George Medal.
7. (usually uncountable, nautical, engineering, physics) Metacentric height, a measure of a ship's static stability in roll.
   • 2017 December 12, National Transportation Safety Board, “1.12.10 Postaccident Analysis of Stability, Structures, and Sinking”, in Marine Accident Report: Sinking of US Cargo Vessel SS El Faro, Atlantic Ocean, Northeast of Acklins and Crooked Island, Bahamas, October 1, 2015‎^[1], archived from the original on 15 May 2022, page 152:

     The report notes that the minimum GM curves in the stability booklet were generated based on the minimum GM required to meet intact stability criteria in 46 CFR 170.170. However, for vessels required to meet both damage and intact stability requirements, such as El Faro, the higher of intact or damage stability minimum GM must be reflected in the minimum GM curves.

8. (countable) Initialism of gold master.
9. (countable, chess) Initialism of Grandmaster.
10. (countable, MLE, slang) Initialism of gang member.

GM

1. Initialism of General Motors: an American multinational automotive manufacturing company headquartered in Detroit, Michigan.
   • 2021 February 4, Stephen Williams, “E.V.s Force Carmakers to Reinvent the Wheel, and Brakes, and Mirrors …”, in The New York Times‎^[2]:

     G.M., of course, is on board, as is Ford Motor, which has made a major investment with the electric truck maker Rivian, […]

• GMC

GM (third-person singular simple present GMs, present participle GMing, simple past and past participle GMed)

1. (roleplaying games) To act as a game master; to run a tabletop role-playing game.

   Synonym: DM

GM (not comparable)

1. Initialism of genetically modified.
   • 2011 March 30, Barry Estabrook, “Echoing Big Agribusiness, Farmers Sue Monsanto”, in The Atlantic‎^[3]:

     Tearing a page out of Monsanto's own playbook, the Public Patent Foundation (PUBPAT), an advocacy group whose mandate is to represent the public's interest in the patent system, filed suit (PDF) on behalf of 60 organic farmers, small farm organizations, and seed businesses this week against the litigious agrichemical and genetically modified (GM) seed giant.

• GMO

GM

1. (Internet slang, text messaging) Initialism of good morning.

   Alternative form: gm

• M&G, MG, m.g.

From English GM.

• (Tokyo) ジーエム [jìíémú] (Heiban – [0])^[1]
• IPA^(key): [d͡ʑiːe̞mɯ̟]

GM(ジーエム) • (jīemu) 

1. Initialism of ゼネラルマネージャー (zeneraru manējā).
2. Initialism of ゲームマスター (gēmu masutā).

GM c

1. Initialism of gärningsman (“perpetrator (of a crime)”).

   Vad vet vi om GM?

   What do we know about the perpetrator?

Common on the internet forum Flashback.

• BO (“victim of a crime”)
• MGM (“suspect”)