LGM

plural LGMs

1. abbreviationinitialismboard gamesInitialism of Lady International Correspondence Chess Grandmaster.
2. abbreviationinitialismInitialism of little green man.

   A life-hostile change in the Martian climate may have taken place early enough to arrest the evolution of complex life and, of course, the emergence of LGM,* which means the riverbeds may indeed hold the fossil remains of an extinct primitive biota.

   2025, Neil deGrasse Tyson, “Planets, Moons, and Cosmic Debris”, in Just Visiting This Planet, Revised and Updated for the Twenty-First Century (Science / Astronomy), Blackstone Publishing, →ISBN, →OCLC, page 39

3. astronomyA pulsar designation.
4. abbreviationinitialismgeographyInitialism of last glacial maximum.
5. USgovernmentPrefix code for a silo-launched surface-attack guided missile.

1. USabbreviationinitialismball gamesInitialism of let's go Mets.