CSM

plural CSMs

1. CommonwealthabbreviationinitialismgovernmentInitialism of company sergeant major.
2. abbreviationinitialismmedicineInitialism of capillary refill or circulation, sensory, motor (“used to check the responsiveness of trauma patients”).
3. abbreviationinitialismUS space programInitialism of command and service module.
4. abbreviationinitialismbusinessInitialism of customer success manager.

1. abbreviationinitialismentertainmentInitialism of Cantiga de Santa Maria.
2. abbreviationinitialismslanglifestyleInitialism of Chainsaw Man.
3. abbreviationinitialismeducationInitialism of Central Saint Martins.
4. abbreviationinitialismThe X-Files fandom slangInitialism of Cigarette Smoking Man.

   Although the CSM has few lines, metaphorically he represents all the secret U.S. operatives of the cold war and after.

   2001, Ray Pratt, Projecting Paranoia: Conspiratorial Visions in American Film, page 232

   2 more examples

   By 1968, CSM was in such a powerful position that he gave orders to FBI Director J. Edgar Hoover, and “worked hard to keep any President from knowing” he even existed.

   1997, James Hatfield, George "Doc" Burt, The Unauthorized X-cylopedia: The Definitive Reference Guide to The X-Files, page 57

   By the way, I realize the CSM is the show’s resident villain, but the WMM has always struck me as being more sinister.

   2002, Tom Kessenich, EXaminations: An Unauthorized Look at Seasons 6-9 of The X-Files, page 11