Grand Central: Abbr.

• Rail station: Abbr
• The universal time coordinated time when a transmission is sent from Earth to a spacecraft or other celestial body

Wikipedia Word definitions in Wikipedia
TRM , an acronym or abbreviation, may refer to: Time Reversal Mirror , a device that uses Time Reversal signal processing to focus waves Technical Reference Model as part of the Federal Enterprise Architecture Teleradio Moldova , the public television network ...