[1] Mathematics Research Center

[2] Medium-Range Search (->"IEEE Standard Dictionary")

[3] Message Retransmission System (in CCITT F.31) Gegensatz: TRS (->"Lexikon der Text- und Datenkommunikation")

[4] Media Recognition System

[5] Major Radiation Source (->"NASA Acronym List")

[6] Manipulation Remote System (Space Shuttle, ->"NASA Acronym List")

[7] Management Review System (->"NASA Acronym List")

[8] Marseille, France - internationale Fughafen-Kennung